My Happy Ending

Due to the release of a new product, Jae-won stays in the office by herself till late at night when her longtime stalker barges into the office, trying to attack her. Later, Jae-won finds out the stalker’s identity. Nam Tae-ju, an insurance investigator, tells Jae-won that they’re suspecting Jae-won’s stepfather for her mother’s death. Meanwhile, Jae-won sees a suspicious message on her husband’s phone, only to find out later that he is cheating on her.

Jae-won wakes up at the hospital after the incident. Because her company is launching a new product soon and she doesn’t know who the attacker is, she decides to let it go for now. But since she can’t trust the people around her, she asks Tae-ju to look into them. She feels sorry for suspecting her father, but regarding her husband, she becomes more certain about him having an affair.