A writer of novels in need of an editor accepts the contract offered to him by a famous writer: to eliminate his ex-wife against a large sum of money.

Couple Jin-goo and Joo-hee have been experiencing a lover's slump after their marriage. Meanwhile, a new couple in the neighborhood, Hyun-jin and Yoo-jeong came to the other couple's house to introduce themselves. They're attracted with each other's husbands and wives, and in the end, crosses the line that is not supposed to be crossed within neighbors. After that day, two couples' passion intensifies...

When a beautiful first-grade teacher arrives at a prep school, she soon attracts the attention of an ambitious teenager named Max, who quickly falls in love with her. Max turns to the father of two of his schoolmates for advice on how to woo the teacher. However, the situation soon gets complicated when Max's new friend becomes involved with her, setting the two pals against one another in a war for her attention.

Two identical twin sisters, separated at birth by their parents' divorce, are reunited years later at a summer camp, where they scheme to bring their parents back together. The girls, one of whom has been living with their mother and the other with their father, switch places after camp and go to work on their plan, the first objective being to scare off a gold-digger pursuing their father.