Talk:Beta/@comment-1784834-20160524005450

My theory:

The three-parter will see the Homeworld Battle Fleet launching a full-scale invasion of the Earth, with one goal: total genocide of all non-Gem lifeforms.

By the end of the third part, the temple will have been destroyed, civilian infrastructure throughout the Americas and Eurasia has been eviscerated, countries have balkanized or fractured, 65% of the human race is dead or forcibly converted into Gems (by a new, horrifying Homeworld process akin to the Cybermen from Doctor Who), and the Crystal Gems (along with Greg and Connie) have been forced to relocate a new base on the Moon after the League of Nations declared the Crystal Gems to be Homeworld spies, and Greg and Connie traitors for aiding and abating them (never mind the fact Connie's parents were both killed in the brutal invasion).

On the bright side, though, the Gem Monsters have been purified, having been corrupted by a Homeworld weapon in the first place, and have all joined the Crystal Gems, so that if Homeworld returns (which Yellow Diamond vowed to do), they'll be better prepared. And yes, these new members would have development over the fourth season.