A woman who finds a pair of pink high heels on a subway platform soon realizes that jealousy, greed, and death follow them wherever they go.
Back in his high school days, Joon-Seok was bullied by Chang-Sik Because of this, Joon-Seok's high school days were like a nightmare. Now, Joon-Seok finds it difficult to live a normal life due to the bullying. Meanwhile, Chang-Sik, who has forgotten what he did to Jeon-Seok, lives a relatively happy life. He is about to marry Ji-Hee. Joon-Seok will pay him back for all the misery.
Jung-Jin is a criminal profiler and he came from the FBI in the United States. Yoo-Min is a detective and he graduated from the top police university, but he is more interested in women then arresting criminals. Jung-Jin and Yoo-Min are called to the special investigation headquarter for a secret meeting. There, Jung-Jin and Yoo-Min receive an order to take down the boss of a criminal organization. The crime boss, with the help of people in power, appears untouchable.
tells the story of Jung-hoon, an honor student who is involved in a murder case at his school. After finding his friend, Tae-gyu, murdered, Jung-hoon becomes the prime suspect. Da-jung, a student who believes in his innocence, helps him uncover the mystery and find the real killer before class resumes and the body is discovered.