A lone automaton roams an abandoned planet, pondering the circumstances that brought It into isolation and caused Them to leave It behind, hoping even after many long years to succeed in one of its directives.
In a world stripped of color by the mysterious Fade, 14-year-old Leo risks everything to prove hues still exist – armed only with his late grandmother's journals and reckless hope. When his search leads him to Mira, a hardened tunnel rat who survives by stealing relics of the vanished past, they uncover a terrifying truth: the Fade was no accident, but a calculated theft by those in power. Now, pursued by a government that kills to protect its secret, the unlikely duo must break into the legendary Prism Vault, where the last remnants of color are guarded by a machine that feeds on human memories, in a desperate heist to restore what was stolen from the world – before the gray consumes them all.