When Fionn Boyle sets foot on Arranmore Island, it begins to stir beneath his feet.... Once in a generation, Arranmore Island chooses a new Storm Keeper to wield its power and keep its magic safe from enemies. The time has come for Fionn’s grandfather, a secretive and eccentric old man, to step down. Soon, a new Keeper will rise. But deep underground, someone has been waiting for Fionn. As the battle to become the island’s next champion rages, a more sinister magic is waking up, intent on rekindling an ancient war.

Fifteen years ago, eight supernatural criminals fled Estero City to make a new life in an isolated tropical hideout. Over time, seven of them disappeared without a trace, presumed captured or killed. And now, the remaining one has died. Left behind to fend for themselves are the criminals’ five children, each with superpowers of their own: Birdie can communicate with animals. Brix has athletic abilities and can heal quickly. Tenner can swim like a fish and can see in the dark and hear from a distance. Seven’s skin camouflages to match whatever is around him. 

Ten-year-old Zeus is mystified (and super annoyed) by the fact he keeps getting hit by lightening. He also longs for adventure, as he has never been far from the cave where he grew up. Zeus gets his wish - and a lot more than he bargained for - when he is kidnapped by dangerous, giant Titans! In self-defense, Zeus grabs the first thing he sees - an actual thunderbolt he pulls from a stone that is covered in mysterious markings. Zeus is the only one who can decipher the markings, and he sets off on a quest to rescue his fellow Olympians from the evil Cronus.

Fourteen-year-old Renata Santiago is the most powerful godborn of them all, a bruja with a unique combination of DNA. The Mexica blood from her dad's side gives her the ability to manipulate shadows. Her mom Pacific, a Maya goddess, gifted her a magical rope that controls time, and Ren recently used it to save a few gods from getting stuck forever in 1987. She brought them back to the present, but her BFF Ah Puch, the once fearsome god of death, darkness, and destruction, is now a teenager with no divine powers. 

Meet nine-year-old Iggy Frangi. He's not a bad kid, he's really not. Okay, so he's done a few (a few is anything up to 100) bad things. And okay, he's not very sorry about most of them. People make a big deal about nothing. What's a little pancake here and there? Is that something to get mad about? Iggy doesn't think so. No one got hurt, so there's no problem. No one got hurt except for that one time, that one time when the Best Idea Ever turned into the Worst Idea of All Time.