Living on his own, Kam On finds he financially tight. He thinks of an idea that subletting one of the rooms in his flat may alleviate the problem. He goes to the Estate Agent and hopes to find a tenant. By chance he meets Heung Hoi outside the Estate Agent office looking for place to stay. They came to the agreement that Heung Hoi will pay $1,700 as a monthly rent to Kam On. Kam On astonishes that Heung Hoi always goes out at night time but stays home during the day. He then follows him and wants to know the true story. He find Heung Hoi climb into one of the house and Kam On follows him. The neighbourhood chases after Kam On because they regard him as thief. Luckily, Kam On runs away the crowd. Kam On finally knows the true story after hearing from Wai Kit. Actually, Heung Hoi is his friend and he dislikes living with his father. Therefore, he always slips back home at night while his father is asleep and gets money from his mother.