When a mysterious app offers instant cash for lies on April Fool's Day, Vivian Chen stays silent—because she's already lived through this day once before, and she knows that at midnight, every liar will pay with their lives. Armed with memories of her previous timeline where she became a billionaire comedian before dying horribly, Vivian must watch everyone she loves tell fatal lies while deciding who deserves to be saved. But when the game offers her a prepared lie worth ten million dollars—one that will kill the father of her child if she speaks it, or kill everyone including herself if she refuses—Vivian discovers the nightmare runs deeper than she ever imagined. Someone has orchestrated every lie, targeted every victim, and buried a secret in her past so devastating she erased her own memory to forget it. Now she has twelve hours to uncover the truth before the game's final reckoning, and the cost of remembering may be more than she can bear.