Du Ah is a college student who currently has three boyfriends. To her, it’s the most natural thing in the world since each of them serves his own purpose. However, someone posts a picture of Du Ah on the school’s online community forum and threatens to reveal her identity as a three-timer. Du Ah’s three boyfriends are now under suspicion.

All three of Du Ah’s boyfriends and Han Wool finally meet to figure out who wrote the post online, and all four of them suspect each other. Du ah thinks it is Han Wool who wrote the post as the photo was found on his tablet PC but, he denies it. Han Wool and Du Ah hurt each other by saying mean words out of anger. Meanwhile, Da Ham, Sang Woo, and Si Han try to take revenge on Du Ah for cheating on them.

Chung Kyung and Woon Beom were mere friends before they got carried away and fell for each other. Years into marriage and a miscarriage, they naturally gave up on having a child. Woon Beom has become a huge part of Chung Kyung’s life. One day, Chung Kyung feels something is different about Woon Beom. At the place Chung Kyung ended up after secretly following Woon Beom, she sees a lady she used to look up to.

Chung Kyung gets suspicious of Woon Beom and Hwa Ran. She blames herself for her husband’s affair and does not want to get a divorce. When Chung Kyung was about to let it slide, Hwa Ran comes to visit Chung Kyung and Woon Beom. Meanwhile, Myung Woon suggests Chung Kyung that he can help her with her problem.

Ha Ram is not sure if marrying Jung Seok is the right thing to do when she does not truly love him. Furthermore, she is not ready to leave her mother, Seon Hwa, all by herself. When she rides on her bike to clear her mind, she witnesses something that gives her second thoughts about getting married.

Ha Ram shares her feelings with others, starting with the woman. Ha Ram finally stands up and talks to Seon Hwa and Jung Seok about how she feels. Jung Seok tries to find a way to work it out for her. Going through this process, she realizes what she is running away from and what she truly wants in her life..

Ban Ya is a successful young movie director and screenwriter. She also teaches at a university and hosts a TV show. However, she is haunted by insomnia, dark memories, and self-doubt. She then meets Sung Mun who tells her she deserves more credit than she gives herself. Meanwhile, Ji Sung, a famous writer, invites Ban Ya to stay at her place for a while.

Ji Sung discovers that Ban Ya is the woman that Sung Mun has been seeing. She refuses to let Sung Mun get the divorce he so desperately wants. However, Sung Mun is tormented by the thoughts of Moo Hyun's death and can't let go of what Ji Sung did to launch her writing career. Meanwhile, Ban Ya also discovers the connection between Sung Mun and Moo Hyun.