The treacherous developments at the end of The Silver Dream have left InterWorld trapped by HEX, Time Agent Acacia Jones missing, and Joey Harker on his own. Injured and on the run, Joey may be the only one who can stop the newly discovered threat of FrostNight from destroying everything--not just InterWorld, but all the worlds in the Altiverse.

A heavy burden for anyone, but especially a relative newcomer to interdimensional travel. Joey begins to Walk the worlds, searching out more versions of himself, all fellow Walkers, to train for the fight. While, of course, attempting to stay under the radar of their enemies and locate InterWorld Base Town before time runs out. Even after recovering some members of his team and receiving aid from Acacia’s brother Avery—who is none too happy to have to help him—Joey can’t seem to catch a break. Everyone is looking to him to be the leader. Whether he’s up to the job or not, he has to take it on anyway.

This novel features a story by Neil Gaiman, Michael Reaves, and Mallory Reaves, and is written by Michael and Mallory Reaves.