Thirteen-year-old orphan Irene believes her father's soul is trapped inside her cat, Moses. Living at her caregiver Ruth's hostel, Irene spends every waking hour studying a mystical book that her parents left behind in the fire that took their lives. Irene thinks the book can help her see them again, if only Moses will give her a clue.

Then, just as a strange fog sweeps over their quiet Chilean town, a mysterious young musician named Francis moves into the hostel. Irene and her new roommate don't particularly get along, but Moses soon leads them both through the fog to a strange tear in reality: an entrance to the Land of the Dead.

Believing this is the key to seeing her parents again, Irene and Francis cross to the other side. There, they encounter the Ferryman of the Dead, who is desperate to escape into the Land of the Living. The Ferryman offers to return Irene and Francis's loved ones in exchange for their help. In the face of such a massive promise, Irene and Francis must decide whether to risk the fate of both the Lands of the Living and the Dead or be braver than they ever thought possible.