Zane Obispo spends every day exploring the sleeping volcano in his backyard. "The Beast", as he calls it, is the one place where he can escape other kids, who make fun of him because he has a limp and walks with a cane. After a plane crashes into The Beast, a mysterious girl named Brooks shows up at Zane's doorstep, insisting that they meet at the volcano, where she will reveal a terrible secret. Zane agrees. Brooks tells him that the volcano is actually a centuries-old prison for the Mayan god of death, whose destiny is directly tied to Zane's.

Thirteen-year-old Sik wants a simple life going to school and helping at his parents' deli in the evenings. But all that is blown to smithereens when Nergal comes looking for him, thinking that Sik holds the secret to eternal life. Turns out Sik is immortal but doesn't know it, and that's about to get him and the entire city into deep, deep trouble.

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.

Space-obsessed 12-year-old Paola Santiago and her two best friends, Emma and Dante, know the rule: Stay away from the river. It's all they've heard since a schoolmate of theirs drowned a year ago. Pao is embarrassed to admit that she has been told to stay away for even longer than that, because her mother is constantly warning her about La Llorona, the wailing ghost woman who wanders the banks of the Gila at night, looking for young people to drag into its murky depths.

Magnus Chase has always been a troubled kid. Since his mother's mysterious death, he's lived alone on the streets of Boston, surviving by his wits, keeping one step ahead of the police and the truant officers. One day, he's tracked down by an uncle he barely knows - a man his mother claimed was dangerous. Uncle Randolph tells him an impossible secret: Magnus is the son of a Norse god. The Viking myths are true. The gods of Asgard are preparing for war. Trolls, giants and worse monsters are stirring for doomsday.