In the empire of Celestria, William von Einsbern—mocked as the “Late Knight” for delaying his magic Trial—faces a brutal Knight’s Proving to secure his family’s honor. Though his lightning magic is precise and controlled, a dangerous secret festers beneath: a power forged during his mysterious year-long disappearance, one even his family cannot explain. As political rivals scheme to exploit his tainted reputation, William’s fractured kin unravel: a father obsessed with legacy, a sister battling envy, and a brother masking insecurity with arrogance. When sabotage strikes the Proving, William’s unleashed power threatens to expose the truth—and the empire’s fragile peace. To survive, he must master the chaos he hides… or let it destroy them all.