When Marcus Hale discovers a mysterious building containing a machine that allows people to alter moments in time, he is forced to decide whether saving his mother’s life is worth risking the future that follows. After choosing to preserve the timeline, Marcus learns others have also been given the power to rewrite history, including a woman who may change a disaster that has not yet happened. Together they must decide whether humanity should reshape time to prevent tragedy or protect the fragile balance that holds the future together.