Plot: Although SUN-MUN tries every possible means to make things difficult for LAU-FEI, LAU-FEI puts up with them one by one. During the night, when LAU-FEI accompanies SUN-MUN to have a drink, SUN-MUN sends a teenage prostitute TSZ-KUEN to serve LAU-FEI, who then hears about the most shocking experience of SUN-MUN