When a mysterious cosmic signal threatens Earth, Will is recruited for a mission beyond space-into the architecture of existence itself. There, he discovers the Hidden Source: the stabilizing force of all universes. And with it, the truth-every version of Will exists somewhere.

WiLL, born into neglect and cruelty, made different choices. Consumed by rage and empowered by a dark force known as the Dimensional Rift, he has become something catastrophic: a being who feeds on resentment and annihilates universes to rewrite his fate.