一个危险的同居开始了 韩进突然被公司派往附近地区。他下楼时毫无准备，就打电话给住在那里的朋友常勋。常勋让韩进暂时呆在家里，但韩进开始思考。 原因是，昌勋的年轻妻子宋妍与元晋有过交往。然而，韩进决定去常勋家看秀妍。常勋刚好离开了一段时间，韩进遇见了苏杨的迷人朋友京熙，她也住在那里。 韩进开始和淑妍和京熙住在一起，他们开始勾引他*

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.