School bus driver Yu Kunqiao (Duan Yihong) caused a serious school bus accident due to dereliction of duty. Kunqiao risked his life to rescue Wang Chuqi (Rong Zishan), who seemed to be closely related to the truth behind the accident. No other students on the school bus survived. Upon learning of this, Wang's father (Aaron Kwok), who was from a prominent family, had to hide Kunqiao in the basement of his home for three years in order to hide this secret, but he kept hinting at when Kunqiao would surrender. With the arrival of visitors, this originally warm and harmonious family of four became more and more weird. The mother (Hsu Weining) was uneasy all day long, the sister (Zhang Zifeng) behaved uncharacteristically, the family members were all harboring evil intentions, and strange things happened frequently. The unspeakable secrets behind this family seemed to be about to surface...