Hyuk-Jin has just broken up with his girlfriend and decides to take a trip to Jeongseon in the province of Gangwon-do. The next day, his friends are too hung over to get up, so Hyuk-Jin makes his way to his destination alone. A trip of opportunity takes a cruel and unexpected turn as misunderstanding and crossed paths occur over and over again.

The Pooles are unable to have a baby after years of trying. They apply to the Rock-A-Bye Adoption Agency...

At 17 Mike O'Donnell is on top of the world: he's the star of his high school basketball team, is a shoo-in for a college scholarship, and is dating his soul-mate, Scarlet. But at what's supposed to be his big game where a college scout is checking him out, Scarlet reveals that she's pregnant. Mike decides to leave the game and asks Scarlet to marry him, which she does. During their marriage, Mike can only whine about the life he lost because he married her, so she throws him out. When he also loses his job, he returns to the only place he's happy at, his old high school. While looking at his high school photo, a janitor asks him if he wishes he could be 17 again and he says yes. One night while driving he sees the janitor on a bridge ready to jump, and goes after him. When he returns to his friend Ned's house, where he has been staying, he sees that he is 17 again. He decides to take this opportunity to get the life he lost.

In São Paulo, the lawyer, Thales, has been married to a wealthy and spoiled Renata for ten years. Her father, Augusto, is a powerful and amoral businessman who gave an excellent job position to his son-in-law at his law firm. Thales best friend is Rui, who is married to Pâmela and has three children, and tells everybody that his wife is a dumb person. During a weekend in the São Paulo countryside at Renata's fancy mansion, Thales has a breakdown and decides to quit working and stay in the house with Pâmela and her children. Renata and Rui, lovers for more than ten years, travel together back to São Paulo. Meanwhile Thales gets close to Pâmela and they have one night stand. Renata and Rui return to the house and she lies to Thales, telling him that Rui brought her back from Augusto's office. Things get even more complicated when Augusto calls.