Sisters who are living in an apartment. The juvenile young sister left home in the middle of the night, an intruder breaks into the house where the older one is left alone.

Choi Yeon, who is rumored to be a lesbian, doesn't care about the rumors. However, she feels special about Ha-gyeong's friendly manners. Choi Yeon gets confused when the rumors about her become true.

I really want to have sex before I turn 21! Ji-hye looks for her destined someone to go on a date, but it's not as easy as she thought. Who will be her perfect one-night stand?

Chae-young was invited to the housewarming party, meets her ex Jeong-yoon, who broke up a year ago. She tries to be cool, but it doesn't clear the air of awkwardness. It even gets worse by Jeong-yoon's new girlfriend joins the party. Chae-young seems so weird with Jeong-yoon's girlfriend and subtle atmosphere inside house... Who do you think ruined this housewarming party?

At a small cathedral on the southern shore of the peninsula, a Catholic priest is beginning to tire of receiving the local villagers' tedious confessions. But when a sudden death shakes the seaside town, it won't be long before the entire population becomes colored with sin.

Se-young stays alone and works overtime. Her lover, Hye-mi, visits Se-young's company and they have a date there. Suddenly, the new employee, Joo-ah, returns to the company.