The heartwarming story of a genius surgeon who becomes a lawyer specializing in medical crimes after losing a patient to a surgical malpractice. Cathartic and suspenseful, this medical and legal drama paints the courtroom like an operating room, where a life may end or be given a fresh start.

Yoon Song Ah works as a marketer for a cosmetics brand. She enjoys her job and dreams of launching her own brand someday. Chae Hyun Seung is a fellow marketer who becomes attracted to Yoon Song Ah. He tries to develop a romantic relationship but Yoon Song Ah rebuffs his advances, not wishing to date younger men.

Jeong Hoon is an anchor of a news show which has the highest ratings. Jeong Hoon’s handsome face and perfect body figure make him look good in a suit. Unlike his gentle appearances, he becomes a tyrant all of a sudden and starts asking aggressive questions to whoever it is. Because of hyperthymesia, he remembers every single thing happening in 365 days a year ever since his childhood. He can’t forget the memory of the woman he loved, Seo Yeon, who disappeared 8 years ago. A rising star who attracts everyone’s attention, Ha Jin, appears in front of Jeong Hoon at that moment. Despite all the attention, Ha Jin doesn’t waver and keeps her confidence. However, she has a secret that her memory is fading away. The man who cannot forget and the woman whose memory is fading away. Will they be able to overcome their difficulties, understand each other, and fall in love at the end?

Three neighbors face problems they want to avoid, but they grow facing their dilemmas. Anna lives with her mother and lives her life following her mother's wishes, but she has a secret she can't tell anyone. Yoo Ra and her family need to leave their neighborhood due to a reurbanization project in the area where they live. Seo Yeon is the vocalist of an indie band. She's very superstitious, and she can't get over her ex-boyfriend, who broke up with her a year ago.

At the start of their 30s, three friends navigate the demanding entertainment industry while juggling love, careers and dreams.