Junyi and Biru, a young couple who are about to have their first child, decide to move back to their hometown villa, which is full of their childhood memories. However, their happiness did not last long. Junyi is haunted by the painful memories of his first love, Jixi, who disappeared in this villa. At the same time, Biru discovers that a suspicious stranger has appeared, and she is convinced that someone is watching them in the house.

Qin Yue is embarrassed of her mother's new job as a municipal cleaner. When she is teased by a more well-off classmate, she claims her mother is working as a flight attendant.