Go Da Kyung is an eager rookie investigator who gets paired with the famous forensic doctor, Yoon Ji Hoon. They initially clash due to their different styles of investigation as well as their opposing personalities, but later develop a complex relationship as the two strive to uncover the truth through science.

Former members of a girl band pursue romance with various suitors while coming to terms with their waning celebrity statuses and ever-evolving relationships with one another.