The Gatekeeper (The Gatekeeper Trilogy Book 1‪)‬

Fifteen-year-old Gaige Porter is special. He just doesn't know it yet.

When a strange girl shows up in his class after he dreamed of her, he doesn’t know what to make of it. He had never met her before. Things only get weirder from there.

He is lured into a gateway to another world much like Earth, but very different. Along with Seanna Bryant and Aoife Connolly, he must face danger, friendship, and betrayal while he tries to figure out what it means to be a hero.