The old house of the Geng family has been uninhabited for years. But recently the doors of the house open and close without anyone going in or out. And at night one can hear people talking and singing inside.
    
One dark evening, Geng Qubing sees light shining from the attic of the house. He slips into the house, and sees a pretty girl sitting with her family in the attic. Deeply attracted to the girl, Geng Qubing is determined to find out who she is, where her family is from, and why they live in his old house. But what eventually takes place is a shock for him!