Three close friends for 5 years, Eun Seong, Hee Sook, and Soo Ji. Only Hee Sook has no relationship experience. One day, a man, Tae seong, appeared to Hee Sook. However, he was a brother of Eun Seong. Hee Sook worried about the friendship, so she started to hide that she kept in touch with Tae Seong. Meanwhile, SooJi and Chan hyuk have been together for a long time. SooJi got hurt from time to time because she thought she wasn't pretty enough compared to her boyfriend who is good-looking. One day, Soo ji saw Chan Hyuk being with a pretty female friend, and she decided to tell him how she felt....

Eun Seong and Hee Sook settled down their argument dramatically that happened in the previous season. Then, Hee Sook starts to deliver her heart to Tae Seong actively. When there is something going on between these two, Do Nam, Hee Sook's first crush from the high school, shows up. Tae Seong keeps his eyes on Do nam and waits for the right time to confess his love. Eun Seong and WooKyung have been great together for over a year. Dong Kyu, Woo Kyung's hometown friend, came up to Seoul. At first, it seemed that he was just one irritating friend of Woo Kyung to Eng Seong, but no one knew that Dong Kyu put this couple at risk of breakup....