Steven Universe: Season 3, Episode 1

3 - 1: Super Watermelon Island

With the return of Malachite, now with Jasper's will dominating Lapis Lazuli's, the Crystal Gems fuse and form into Alexandrite. With the help of the watermelon Stevens, who have formed a society of their own, Malachite is defeated and defused. Lapis silently returns with the Crystal Gems.