Description: When David Chen becomes the prime suspect in a series of brutal murders, he discovers something impossible: a working time machine hidden in his estranged friend's basement. With only twelve hours to traverse the past, David attempts to prevent his ex-girlfriend Emily's death and clear his name. But Novikov's self-consistency principle proves to be a merciless law-past actions cannot change future consequences. As David and Lisa race to uncover the killer's true motives, they discover that Emily herself is far more than a victim. In a twisted tale of desperation, love, and sacrifice, every attempt to save the future only entangles them deeper in a web of tragedy. This haunting exploration of fate asks: if you could go back in time, would changing the past truly save anyone?