For Charlie, the house of clocks isn't a home; it's a burden. With the power to travel between timelines, she has become the solitary keeper of an infinite number of parallel worlds, a responsibility she took on after a catastrophic event. Fifteen years ago, a betrayal by an entity known as the Void tore her away from her three friends and shattered their shared reality. Now, each tick of the clocks is a new responsibility, a new potential catastrophe to prevent. When a temporal anomaly linked t