A man sets up the First Love Agency to help people locate their long-lost first love. But then he ends up falling in love with his first client.

A boy who broke up with his first love becomes frightened of his fading memory of the ex-girlfriend. The boy recalls a certain memory, meeting a girl by accident. While they are watching each other, the boy tells the girl there is a small door which swim in deep sea to other people's dreams. The girl gets to like him more and more. One day, while they get to know each other, the boy disappears. The girl beomes unsettled and begins to search for him.

Kang Doo-Sub (Lee Won-Jong) is a gangster and people are afraid of him. One day, he finds a female high school student ghost looking at him. He freaks out and tries to get rid of the ghost, but, no matter what, the ghost is still there. Kang Doo-Sub turns to a private detective.

A woman works at a coffee shop. She has a nondescript appearance, while dealing with financial troubles. A man walks into the coffee shop and takes an interest in her. The man is a talented painter and wealthy. A volatile relationship develops between the couple. What's their motifs?