In the clockwork city of New London in the 19th century, the gears of the Void Clock Tower control the flow of time, but they hide time worms that feed on history. Toby, the son of a clockmaker, accidentally awakens the ability to control time. He forms an adventure team with Claire, a history girl, and Kai, a rift walker who has lost his memory. With the pocket watch elf "Clock" that can sense time distortion, they break into the infinite loop of naval battle rifts, forgotten historical vacuums, and intertwined and chaotic time and space mazes. Every time jump is a test of sanity: every time the truth is revealed, it is one step closer to the secret of the previous round of civilization being swallowed up by time. Can they repair the collapsed timeline and prevent the time worm from completely gnawing away at human history?