Sixteen-year-old dock boy Will is on the run, pursued by the men who killed his mother. Then an old servant tells him of his destiny to fight beside the Stewards, who have sworn to protect humanity if the Dark King ever returns. Will is thrust into a world of magic, where he starts training for a vital role in the oncoming battle against the Dark.

As London is threatened and old enmities are awakened, Will must stand with the last heroes of the Light to prevent the fate that destroyed their world from returning to destroy his own.