Valentine's Day is different this year for the residents of the Utonium household. With a newlywed Professor, a smitten Buttercup, a committed Blossom, and a crushed Bubbles, ups and downs are bound for everyone.

Five years after they fled Townsville, the Ruffs are back. Immediately after their return, they encounter a mysterious and powerful stranger. The stranger brings them to the Puffs, where an unlikely alliance forms. The Ruffs also find themselves under the protection of Bubbles Utonium. Everything has changed in these five years, and the Ruffs are in for more than they expected.

Senior year is full of amazing privileges. Some of which include bossing freshmen around, going on senior trips and exclusive parties, senior ditch days, and the most anticipated... prom. There's a lot of buzz around the halls of Townsville High, and prom proves to become a obstacle in some of our favorite Chemical X superheroes' lives. Can they manage to survive prom season?