Private detective Lin Yan is drawn into an urban-legend game called “Ten-Day Reincarnation” while investigating the bizarre suicide of a close friend. Every ten days, all participants must solve a logically airtight death puzzle designed by a mysterious force known as the Collector. Failure means being erased; success means entering the next round with their memories intact. When Lin Yan discovers that both his friend's true cause of death and the ultimate secret of the game are closely tied to his own lost childhood memories, he must race against the countdown of an endless cycle to deliver a deadly counterattack spanning reality and illusion.