30-year-old Go Sa Ri is trying to start over. Unlike in her twenties, when she lived as if she was imprisoned, she decides to live freely in her thirties. She faces a difficult situation when her ex-boyfriend Jung Woo Sang (younger than her), her best friend, her boss and a fearless model boyfriend simultaneously try to win her over.
Pi Yoon Won is a talented media artist who owns his own gallery and cafe. He has feelings for Go Sa Ri, with whom they were friends in their youth.
Ki Sung Jae is the CEO of the fashion brand where Go Sa Ri works. The perfect guy both externally and internally. He shows warmth in his actions towards Go Sa Ri, although at times he seems cold.

Yong Ha Rim is a young guy who is not afraid to express his feelings. He works as a model and meets Sa Ri at a club.
Du Ru Mi is a model who is always straightforward and confident, always ready to take the initiative when a handsome guy appears. She is a person who is very loyal to her friends.