Chaoying, a retired rancher, decides to renovate his house after selling off his cattle. Shuhe, a villager helping with the renovation, is found badly injured after a hit-and-run. Chaoying and his friend Shuangzi vow to bring the culprit to justice.

Delves into the realities of an aging society and centers on Ye Xiaolin – a former killer turned caregiver. She infiltrates and kills seniors under the guise of offering care, but her life takes an unexpected turn after a chance encounter with zookeeper Ma Deyong. As their fates become entangled and detective Zhou Ping begins to investigate the string of murders, a gripping story unfolds. The film raises awareness of aging-related societal issues by focusing on the themes of death, family dynamics, and the dignity of aging.