Allie sets off with Mikey, who was once the terrifying monster, McGill, in the book Everlost, to find her parents in hopes that she might put her spirit to rest; meanwhile, Nick finds himself in a race against time to save the Afterlights from endless entrapment in Everlost by the Sky Witch, Mary Hightower.

Nick follows the rumor of "Zack the Ripper", revealed to be Zinnia, a girl who died in the Civil War while pretending to be a boy.

Zinnia has the ability to "rip," breaking the barrier between the living world and Everlost to pull or push things through.

By the end of the book, The Ripper, Allie, and Nick join forces to defeat the evil Mary Hightower and foil her plan to kill all the world's children in order to bring them into Everlost.

Determined to follow Allie, Mikey sinks into the earth with the chocolate golem so that they can cross into the west.

Milos meets Mary in the real world, where she asks him to kill her so that she can return to Everlost and continue her crusade.