Park Eun Woo worked as a doctor in a clinic in Hanoi where he fell in love with a Vietnamese girl Ly Thi Vu. Due to the sudden death of his father, he had to return to Korea in a hurry but the message wasn't related to Ly Thi Vu. His elder brother Park Sok Woo who worked as a farmer in the field was hard pressed by his mother to go to Vietnam to find a wife and he ended up bringing Ly Thi Vu to Korea with the intention to marry her. Song Il Lan was Park Sok Woo's childhood friend and she realized that she was in love with him and he had a similar feeling for her too. When the misunderstanding between Park Sok Woo and Ly Thi Vu got clarified and all truth was out in the open, his mother who thought Ly Thi Vu was going to be her first son's wife and liked her didn't think she was good enough for her second son as he was a doctor. Ly Thi Vu was hurt and returned to Hanoi. Later the mother came to realize her folly and relented. Park Eun Woo didn't want to give up Ly Thi Vu and so he went back to work in Hanoi and search for her
33-year old Han Je In is a mystery novelist who is notorious for habitual false reporting to the police in town. Her only friend is police officer Rok Hwan, who has had a crush on her since childhood. One day, Je In hears a scream of help from an apartment upstairs and reports that a serial killer lives above her but no one believes her. Convinced that Jason, the handsome man living upstairs, is a serial killer, she asks Rok Hwan to help follow him around with her. But as she learns more about Jason in her pursuit to uncover the truth, she begins to fall for him. Seeing her in this state, Rok Hwan feels a tinge of jealousy.
