Chen Jiuyou had been working in the city for three years without going home. Then one day, he received a message from his mother saying she had come to visit him in the city and was waiting outside his door. She asked him to let her in. At the same time, Chen Jiuyou received a message from his father: his mother had died in a car accident that afternoon. Just then, someone knocked. Chen Jiuyou thought in terror, My mother is already dead. So who is outside the door?
