In his childhood, Yoon Na-moo was a seemingly quiet and mysterious boy whose father was a psychopath serial killer.

But when Na-moo's father, Yoon Hee-jae — a man with a twisted affection for his son — murders Nak-won's parents, their short love comes to an end.

Years later, Gil Nak-won is now Han Jae-yi, an aspiring actress (like her mother) who always tries to have a good outlook on life, but who also has a panic disorder due to her traumatic past.

Yoon Na-moo is now Chae Do-jin, a rookie detective who wishes to atone for his father's sins.

These two would-be lovers have held on to the precious memories of when they were together, but, connected by a tragic fate, they must try to overcome the stigma and hardships they will later face.