It's you and me, Pearl. Let's fuse.
The episode begins with Steven and Amethyst watching Crying Breakfast Friends!. Steven seems to be enjoying the show, but Amethyst is confused at the cartoon's storyline. The television stops working and receives a sudden bout of static. Steven complains about this happening again, and Amethyst offers to fix it. After a few swift kicks, the screen displays Peridot demanding help and extraction to Yellow Diamond in a message on all frequencies. Garnet and Pearl catch the broadcast as well, and Steven confirms with Connie over the phone that he is not the only one receiving Peridot's transmission. Pearl wonders how it is possible to broadcast such a powerful message, and they deduce that it's only possible via the Communication Hub.
The Crystal Gems travel to the Communication Hub on Lion's back (with Steven in Lion's mane), as the Warp Pad was destroyed when Sugilite damaged it while in her rampage the first time they destroyed the Hub. They find that the hub has been rebuilt with what was left of its remains the last time it was destroyed, and seems highly energetic. Steven understands that they must destroy the hub, and suggests to Amethyst that she and Garnet form Sugilite again. Amethyst seems happy about the idea but states that it is Garnet's decision whether or not to form Sugilite. Garnet refuses to do so, stating that the previous time Sugilite was formed, she went berserk, taking over their personalities and consequently destroying the Warp Pad while smashing the hub. She then states the reason for it being a disaster is because Garnet can be brash and Amethyst can be reckless. Garnet states that this time, they must be careful, and suggests fusing with Pearl. Pearl seems ecstatic at the idea and happily accepts the proposal to fuse into Sardonyx.
Garnet and Pearl perform the fusion dance in order to form Sardonyx, while Steven excitedly watches the process. After Sardonyx is formed, she appears to debut herself in an emcee-host style, to Amethyst's chagrin. Sardonyx is happy to finally see Steven as herself and plays with him for a bit before summoning Pearl and Garnet's respective weapons (spear and gauntlets), putting Garnet's gauntlets at the end of Pearl's spear to create a huge war hammer. Steven asks if Sardonyx will use her war hammer to smash the Communication Hub with it, and Sardonyx suggests different alternatives to how she operates that are antonymous with Amethyst's behavior. She then proceeds to take out pillars by hitting them, listing her characteristics in words with sophisticated connotations; "The proper words to describe yours truly are: specific, intelligent, accurate, faultless, elegant, controlled, surgical, graceful, and powerful! But yes, occasionally, I am known to smash.". She cites these qualities as she carefully disassembles the key components of the rebuilt Communication Hub. After completing the task, she unfuses.
Garnet and Pearl dance together in excitement and happiness after unfusing, and Steven joins them. They are happy to express their victory and share congratulatory words. Pearl wonders why they don't do that more often, as Amethyst sulks from a distance. Back at the Crystal Temple, Steven and Garnet are watching Crying Breakfast Friends! again. Steven is invested in the show, but Garnet quietly shows apathy. Amethyst arrives from the temple gate and walks to the refrigerator, visibly annoyed, as Steven implores her to watch Crying Breakfast Friends! with him. As Pearl enters the house, the television receives static again, and they all leave for the Communication Hub yet again.
Garnet and Pearl fuse again to form Sardonyx. She gloats about how her existence is demanded due to her personality (perhaps intentionally towards Amethyst) and proceeds to disassemble the Communication Hub again exactly like last time. As she does so, Amethyst sings "Tower of Mistakes", expressing her sadness that she can't be with Garnet anymore and maybe she is truly better off with Pearl. Later, Steven and Amethyst, along with Lion, arrive at the Communication Hub for surveillance. They know that Peridot had come back to repair the hub twice, and they can only assume that she will return to repair the hub again. Their plan is to keep watch and capture Peridot as soon as she is spotted. They take their position, hidden from sight, and survey their surroundings. Steven tries to pass the time and teaches Amethyst a floating finger illusion, which is his method of passing the time.
As Steven is about to leave, saying that even though they didn't catch Peridot, Amethyst now knows a neat trick, a green flash suddenly appears. Both of them spot Peridot's escape pod approaching the hub at a high velocity and are confused as to how Peridot has access to her escape pod since they had taken it into the temple since "Joy Ride", therefore rendering Peridot helpless to retrieve her damaged escape pod.
The pod lifts and puts the displaced pillars in position to rebuild the Communication Hub, and flies to the top, where its rider exits the pod, seemingly to inspect its structural integrity. After focusing on using his telescope, Steven makes the discovery that it is Pearl who has rebuilt the hub. The next day, Steven and Amethyst discuss why Pearl would rebuild the hub while watching television. Steven suggests that she might be studying how it works, but Amethyst eliminates the idea.
Steven then believes that it might get them more channels and turns on the television, only to see static again as Pearl comes in and notices the static. As Steven and Amethyst's nervousness increases, Pearl exclaims that Peridot had repaired the Communication Hub, urging Garnet to destroy it. Garnet is frustrated that her future vision does not reveal them capturing Peridot, unaware of Pearl's deception. The Crystal Gems depart for the hub again.
The hub seems fixed and operational, and Pearl is eager to keep fusing with Garnet to make Sardonyx and to keep disabling the tower over and over again. Amethyst realizes her motives for rebuilding the hub, and at the last minute, she stops Pearl and Garnet from fusing. Steven hesitantly states that they saw Pearl repairing the hub.
He suggests that she confess to Garnet and, realizing her plan is revealed, Pearl apologizes to Garnet and tells her that it's just fun to be Sardonyx with her. Garnet throws Pearl to the ground, realizing why she could not see the Crystal Gems apprehending Peridot in her future vision. Pearl tries to talk to Garnet and explain herself, but Garnet is angry and denies Pearl's claims that she only wanted to share a few victories, scolding Pearl and telling her that the past instances were under false pretenses.
Amethyst attempts to defend Pearl and says that fusing with Garnet is their only chance of feeling powerful. Garnet furiously yells that Peridot is out there somewhere, and Pearl is distracting the Crystal Gems with trivial matters for her own selfish needs. Pearl once again tried to explain herself, but Garnet cuts her off, then orders Amethyst to fuse with her. Once they form Sugilite, she takes out the Communication Hub with one punch, while Pearl stares, mortified.
Later, Steven and Amethyst are back home, watching Crying Breakfast Friends! once more. Pearl enters the house and walks towards the temple gate, and Garnet warps back from the pad and walks towards the door. As they silently walk past each other, Pearl is visibly saddened and guilt-ridden while Garnet's anger drives her to sever interaction with Pearl. As Amethyst and Steven look by, Amethyst says: "Man, it sure would be nice if things worked out the way they do in cartoons.", to which Steven agrees as he turns off the television, ending the episode.
- Sardonyx (debut)
- Peridot (on the TV)
- Yellow Diamond (mentioned)
- Sugilite (non-speaking cameo)
- Connie Maheswaran (mentioned, pictured)
- Jasper (mentioned)
- Lapis Lazuli (mentioned)
- Crying Breakfast Friends Cast
- Sad Spoon
- Crying Pear
- Sad Bacon
- Sardonyx's War Hammer (debut)
- Steven's Phone
- Warp Pad
- Escape Pod
- Damaged Warp Pad
- Crying Breakfast Friends!
- A clip from this episode, introducing Pearl and Garnet's fusion, was shown at SDCC 2015.
- In a deleted scene, Steven pulls snacks out of Lion's mane.
- The ending theme in this episode is similar to the one at the end of "Jail Break", but the audio is slightly distorted.
- This episode is symbolized in the promo art for the third StevenBomb by a picture of Crying Pear from Crying Breakfast Friends!.
- When the TV set is vibrating, it makes the same sound the Wailing Stone did when Greg was trying to adjust its audio and video properties.
- Steven's Latin American voice actress, Leisha Medina, had previously confirmed that Sardonyx would debut in this episode.
- In this episode, Garnet displays a reluctance to forgive, apparent by her disagreement with the idea of forgiving Pearl and forgiving Crying Pear (when Steven asks if Garnet would forgive her), and later not letting Pearl off the hook.
- Ronaldo saw Peridot's signal and made a blog post on Keep Beach City Weird.
- To celebrate this episode, Christy Cohen made sad pears to symbolize Pearl's guilt.
- This episode does not end with a star-shaped iris closing in on a specific object.
- The scene with the "weird cactus" that Steven mistakes for Peridot was devised by Jeff Liu.
- The episode title is both a reference to Peridot asking for help from Homeworld and the Crying Breakfast Friends! TV show with-in the world of Steven Universe.
- Sardonyx's formation has many callbacks to Sugilite's debut.
- In "Coach Steven", Garnet says, "We don't need to be careful, we just need to be huge." to justify fusing with Amethyst instead of Pearl. In "Cry for Help", Garnet tells Pearl, "What we need now is to be careful".
- When Garnet asked Amethyst to fuse in "Coach Steven", Amethyst is excited while Pearl is grumpy and disappointed. When Garnet asks Pearl to fuse in "Cry for Help", the roles are reversed.
- When Sugilite forms, a red dragon silhouette appears, breathing out black flames which grow to form Sugilite's body. When Sardonyx forms, she appears in a pillar of light which turns into a curtain and then splits apart into a cloud of dragonflies.
- In "Coach Steven", Steven asks Sugilite if she is going to smash things with her weapon. In "Cry for Help", Steven asks Sardonyx the same question.
- Sardonyx's appearance and behavior contrast with Sugilite: she has Pearl's thin build (mixed with Garnet's curvaceous traits), graceful moves, well-kept hair and wears an elegant attire; also, she asks how everybody is doing just after she finishes forming. Sugilite, on the other hand, has Amethyst's heavy build (mixed with Garnet's curves), moves somewhat brutishly, has a wild hairstyle, and wears punk-themed clothes; her first words after forming showed her egoist persona. Also, Sugilite's visors are pointed, whereas Sardonyx's are rounded.
- Also, if you listen closely during the formation of Sardonyx, you can hear that some of the same sound effects were used for the formation of Sugilite.
- Sugilite's tower-smashing punch is inspired by the "Twister-Sock Punch" from Popeye and Donkey Kong's "Giant Punch" from Super Smash Bros. 
- When Amethyst opens the refrigerator while Steven and Garnet were watching Crying Breakfast Friends, one of the products inside the refrigerator is labeled "Moomoo Milk" which is the same name as the drink from the Pokémon franchise.
- Sardonyx has a noblewoman's laugh.
- Steven does the "floating sausage" optical illusion.
- Rebecca Sugar recommended to Joe Johnston to look into the choreography of the Korean singer Sunmi for animating Pearl and Garnet's fusion dance.
- The storyboards for Pearl and Garnet's fusion dance were also timed to Sunmi's track, Full Moon.
- Peridot assembled a functioning signal tower out of the ruins of the Communication Hub.
- The Crystal Gems reached the hub with Lion's portal ability because the Warp Pad was broken in "Coach Steven".
- Peridot's Escape Pod has been repaired by Pearl since the events of "Joy Ride".
- Garnet says "What we need now is to be careful" when proposing fusion to Pearl, referencing when she said "We don't need to be careful, we just need to be huge" before fusing with Amethyst in "Coach Steven".
- In "Tower of Mistakes", Amethyst says "I forgot how great it felt to be us", referencing when Sugilite says "I forgot how great it feels to be me!"
- In the episode of "Crying Breakfast Friends!", Sad Spoon forgives Crying Pear, symbolizing Garnet forgiving Pearl in "Friend Ship".
- When Pearl and Garnet fuse into Sardonyx only two gemstones are present.
- When Sardonyx summons her weapon, the cable holding the star is yellow, after it zooms out, it's black.
- When Sardonyx is stating that "she is known to smash" her bowtie changes from its regular palette to a very light blue.
- Sardonyx's upper gloves are drawn inconsistently. In some scenes, Sardonyx's gloves (Garnet's gloves) appear to cover the middle fingers at the back of the hands. In other scenes, they do not cover the backs of her hands, leaving the finger parts detached. It is currently unknown which of these is an error.
- When Pearl is seen through the reflection on Garnet's glasses, Garnet's glove is missing.
- When Sardonyx is about to hit the last pillar, her hammer changes color.
- In some scenes, the back of Sardonyx's split coat is orange, while it's supposed to be black with only the inner part being orange. Also, when Sardonyx is about to hit the last pillar, her hammer's position has changed.
- When Sardonyx is about to squish Steven, Ruby's gem facet on her gemstone is a sky blue.
- When Sugilite is destroying the Communication Hub, her armbands disappeared for a few seconds.
- When Sardonyx summons Garnet's gauntlets, her gloves are briefly colored like Garnet's gloves.
- When Garnet is watching Crying Breakfast Friends! with Steven, her glove covers her thumb in addition to her middle finger.
- When Pearl is beginning the fusion dance, her neck is uncolored for a single frame.
- When Sardonyx fused before Amethyst sings, the torn pattern on the side of Amethyst's tank top is on her left, after she begins to sing while walking away, it's on her right.
- When Sardonyx disabled the tower for the last time, Steven, Lion, Amethyst, and the Warp Pad disappeared.
- After Sardonyx jumps down from disabling the tower for the last time, one can see that Ruby's gem on Sardonyx's left hand is missing.
View the episode's transcript here.