A tale of two Damiens.
After ruining the annual Tines family barbecue by retaliating against one of his stuck-up superhero cousins—who totally deserved it, no matter what anyone says—Damien just wants an easy summer. One that involves him and his friends hanging out and going on the occasional superhero mission. He doesn’t need his “good twin” from another dimension where he was raised by Gordon showing up and making a mess of everything, and he sure as hell doesn’t need him living at his house, doing chores without being asked, and generally being the perfect superhero son his family’s always wanted.
And as if that wasn’t bad enough, his good twin refuses to lie low. He’s obsessed with doing good deeds and even volunteers to be his dad’s sidekick on his lame kids show. Damien soon has his hands full just trying to stop this guy from making him look like one of the stereotypical douchey heroes he’s always hated. And when his good twin starts to win over all his friends, it’s the last straw. Damien knows there’s only room for one of him in Golden City, and he’s more than ready to get rid of this guy.
But when Damien’s attempts to send him back home backfire and an “evil” version of his half brother Xavier shows up—as if Xavier could get any worse—the two Damiens will have to find a way to work together despite their differences. That is, if they want to thwart Xavier’s evil plans and stop him from erasing everyone they care about from existence.