Season 1

"Season 1" is the first season of Steven Universe, and has a total of 52 episodes. As of April 9, 2015, this season has completed its run of 52 episodes.

Episodes

 * 1) Gem Glow
 * 2) Laser Light Cannon
 * 3) Cheeseburger Backpack
 * 4) Together Breakfast
 * 5) Frybo
 * 6) Cat Fingers
 * 7) Bubble Buddies
 * 8) Serious Steven
 * 9) Tiger Millionaire
 * 10) Steven's Lion
 * 11) Arcade Mania
 * 12) Giant Woman
 * 13) So Many Birthdays
 * 14) Lars and the Cool Kids
 * 15) Onion Trade
 * 16) Steven the Sword Fighter
 * 17) Lion 2: The Movie
 * 18) Beach Party
 * 19) Rose's Room
 * 20) Coach Steven
 * 21) Joking Victim
 * 22) Steven and the Stevens
 * 23) Monster Buddies
 * 24) An Indirect Kiss
 * 25) Mirror Gem
 * 26) Ocean Gem
 * 27) House Guest
 * 28) Space Race
 * 29) Secret Team
 * 30) Island Adventure
 * 31) Keep Beach City Weird!
 * 32) Fusion Cuisine
 * 33) Garnet's Universe
 * 34) Watermelon Steven
 * 35) Lion 3: Straight to Video
 * 36) Warp Tour
 * 37) Alone Together
 * 38) The Test
 * 39) Future Vision
 * 40) On the Run
 * 41) Horror Club
 * 42) Winter Forecast
 * 43) Maximum Capacity
 * 44) Marble Madness
 * 45) Open Book (moved to Season 2)
 * 46) Story for Steven (moved to Season 2)
 * 47) Shirt Club (moved to Season 2)
 * 48) Rose's Scabbard
 * 49) The Message
 * 50) Political Power
 * 51) The Return
 * 52) Jail Break

Summary
The first season of Steven Universe mainly focuses around Steven learning about being a Crystal Gem along with the history of the Crystal Gems. Throughout the first part of this season, Steven mainly hangs around Beach City. In episode 1, "Gem Glow," Steven's gem glows for the first time along with his ability to summon his weapon. On his first mission in the series outside of Beach City, the Gems test him at the Lunar Sea Spire. He learns how to partially shape shift in "Cat Fingers," but never tried afterwards, and met Connie in "Bubble Buddies." He then finds a pink lion in "Steven's Lion," whom he keeps as a pet. In "Giant Woman," Steven learns about fusing for the first time.

He discovers the ability to change his age in "So Many Birthdays" and more about his mom, Rose Quartz, in "Lars and the Cool Kids." Pearl "shows" Steven how Gems recover from wounds in "Steven the Sword Fighter" after being damaged by her hologram counterpart. He manages to activate the door to Rose's Room and recreate Beach City in the episode "Rose's Room." He meets a second fusion and learns what true strength is in "Coach Steven." In "Mirror Gem" and "Ocean Gem," Steven releases the first non-Crystal Gem, Lapis Lazuli, from a mirror and heals her gem so she can go home.

He learns about the Gems interstellar empire in "Space Race". He helps a friend see the truth in "Keep Beach City Weird." He discovers the ability to create life from plants "Watermelon Steven" and learns more about his mother in "Lion 3: Straight to Video." In "Warp Tour," he sees a Homeworld Gem warp to Earth much to the dismay and panic of the Crystal Gems. In "Alone Together" Steven fuses with his friend Connie and forms Stevonnie. In "Future Vision," Steven learns about Garnet's foresight. In "On the Run," he learns about Amethyst's past and the Homeworld's intentions. In "Horror Club," Steven learns of past relations between Ronaldo and Lars. In "Winter Forecast," Steven temporarily gets future vision from Garnet, in "Maximum Capacity," Greg and Amethyst start bonding, by watching their favorite show, Lil' Butler. In "Marble Madness," Peridot returns to Earth.

In "Open Book," Steven and Connie want a new ending to a beloved book series they have recently read so Steven takes them into Rose’s Room to re-enact it. In "Story for Steven," Greg tells Steven the story of how he met Rose Quartz. In "Rose's Scabbard," Steven helps Pearl cope with her loss of Rose. In "The Message," Lapis Lazuli warns the Gems of a Gem returning to earth. In "Political Power," the Crystal Gems begin preparing for Peridot's return to earth. In "The Return," the Crystal Gems are abducted by Jasper and Peridot. In "Jail Break," Steven finds out Garnet is a fusion of Ruby and Sapphire. The Crystal Gems later break free, destroying the ship, and leaving behind debris around the beach of Beach City ending the first season of Steven Universe.