Young Sister-in-Law 5

Won-jin is sent into a nearby region suddenly by the company. He is unprepared when he goes down so he calls his friend Chang-hoon who lives there. Chang-hoon lets Won-jin stay at his house for the time being but Won-jin gets to thinking. The reason is, Chang-hoon's young wife Soo-yeong has a history with Won-jin. However, Won-jin decides to go to Chang-hoon's house to see Soo-yeong. Chang-hoon just happens to leave the house for a while and Won-jin meets Soo-yeong's glamorous friend Kyeong-hee who is also living there. Won-jin starts living with Soo-yeong and Kyeong-hee who starts seducing him.

Tae-soo is getting ready for a job in a single room that isn't soundproof and ends up calling his university senior, Woo-seong. Woo-seong recently hit the jackpot with stocks and is running a share-house near Seoul. Tae-soo explains his situation to Woo-seong and Woo-seong welcomes him to his home. When he arrives, he sees a naked woman and mistakes Bong-soon for his senior's sexy wife...