A mystery thriller about what happens when a detective finds out that a case he is working on resembles a novel while investigating the death of a best-selling author's husband.

When Hye-Jung was young, her life was difficult. She was good at fighting, but also studied well. Overcoming her tough situation, she is now a doctor.

A competitive swimmer crosses paths with his childhood friend, a rising weight lifting star, and realizes that she has a secret crush on his cousin.

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.