A tale of two Damiens.
After ruining the annual Tines family barbecue by retaliating against one of his stuck-up superhero cousinsâ€”who totally deserved it, no matter what anyone saysâ€”Damien just wants an easy summer. One that involves him and his friends hanging out and going on the occasional superhero mission. He doesnâ€™t need his â€œgood twinâ€ from another dimension where he was raised by Gordon showing up and making a mess of everything, and he sure as hell doesnâ€™t need him living at his house, doing chores without being asked, and generally being the perfect superhero son his familyâ€™s always wanted.
And as if that wasnâ€™t bad enough, his good twin refuses to lie low. Heâ€™s obsessed with doing good deeds and even volunteers to be his dadâ€™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 heâ€™s always hated. And when his good twin starts to win over all his friends, itâ€™s the last straw. Damien knows thereâ€™s only room for one of him in Golden City, and heâ€™s more than ready to get rid of this guy.
But when Damienâ€™s attempts to send him back home backfire and an â€œevilâ€ version of his half brother Xavier shows upâ€”as if Xavier could get any worseâ€”the two Damiens will have to find a way to work together despite their differences. That is, if they want to thwart Xavierâ€™s evil plans and stop him from erasing everyone they care about from existence.