Xu Qing, eighteen years old, is a senior at a prestigious private high school in the city. His father, Xu Guang, is the chairman of a listed company with a net worth of billions. When Xu Qing was thirteen, his father’s affair with his secretary, Qiao Yu, was discovered by Xu Qing’s mother, Tan Xin, who subsequently divorced him. After a lengthy legal battle, Xu Guang finally gained custody of his son. Not long after the divorce, Xu Qing’s father married Qiao Yu, his mistress, making her Xu Qing’s stepmother. Xu Qing sat on the sofa, seemingly playing on his phone, but his eyes were constantly darting out of the corner of his eye, scrutinizing the new nanny kneeling on the floor wiping it.