Sun-woo is a psychiatric doctor married to Tae-oh who aspires to be a film producer. One day, she finds a strand of a reddish hair on his scarf and tries to find the truth behind it.

Sun-woo suffers from a betrayal of Tae-oh and her friends. Da-kyung provokes Sun-woo while Sun-woo examines her.

Tae-oh finds out Da-kyung's pregnancy and is more frustrated with the situation. In the middle of funeral, Sun-woo hears a song that Tae-oh played when proposing to her in the past, coming from the parking lot.

While Sun-woo secretly prepares for a divorce, Je-hyuk expresses his feelings for her stronger. Sun-woo breaks out a secret about Da-kyung and Tae-oh at the dinner with Da-kyung's family and leaves.

Tae-oh is restless about Sun-woo acting differently to him. Ye-rim senses infidelity upon Je-hyuk with Sun-woo. Meanwhile, a new psychiatrist, Yoon-ki joins the hospital.

Sun-woo and Tae-oh blame each other for breaking the family apart. As the heated argument peaks, Tae-oh strangles her and Sun-woo falls to the floor and injures her head. Jun-young witnesses and is in shock.