On one gloomy rainy night, a writer encounters an unexpected visit paid by a woman of his past. Seeking solitude from her ex-lover, she finds solace in this gentleman and from that day on, they cherish every inch of each other's body and indulge in ecstasy until her forbidden past is gradually revealed.

Mi-ja, who has been taking care of a retired teacher, Ms. Park, invites several of her former students to her house 16 years after their graduation. Since the end of her teaching career, Park has been residing in the countryside, suffering from an illness while an ex-student, the kind and pretty Mi-ja cares for her.

In order to bust a money laundering ring, the cops must work undercover at a hostess bar. Zaniness ensues as we witness policewomen masquerading as hostesses, detectives masquerading as waiters, and other similarly awkward role-reversals.

Kim Dae-han (a lively, irresistible college student passionate and impulsive) shatters his vow of purity in a single night. The story takes a turn when Go Jeong-woo, a psychology professor well past thirty and still inexperienced, finds herself unexpectedly drawn to her student.

Part time taxi driver and full time bum Ki-hoon lives one day at a time. His only wish is to live happily ever after with Hyun-hee. One day, Ki-hoon runs over a man while driving at dawn and it is only the beginning of his troubles. That same day, before the car accident, a corrupt businessman's mistress and her lover are hiding in a hotel room after having taken off with the man's dirty funds. But their happiness is short lived when things go haywire due to the man's cronies, cops and mistaken identities. As hitmen, cops, and the two lovers get entangled, one of them runs out with the money. But soon he runs into Ki-hoon's taxi and the man is killed on the spot. Ki-hoon thinks his luck has changed for the best when discovers the cash and leaves it in the care of Hyun-hee as she works her shift in a convenience store. Now the hitmen and the cops are hot on the trail of Ki-hoon. The paths of these unfortunate individuals come to a head at the convenience store.

Go Jeong-woo, a female psychology professor, gets drunk after witnessing her boyfriend cheating on her on Valentine's Day. Kim Dae-han, a college student who followed him, sees her staggering near the lake and tries to save her, but they all fall into the lake and the two spend the night. Afterwards, what will happen to the romance of the two people who met again as professor and student in a university lecture room?