Choi Ho

The four male characters in this film don’t seem to have much in common: a college student who accidentally comes across a sex tape of his girlfriend, an unemployed man lives at the mercy of his wife. The third man lives with his ill mother and finally, Min Gi who works as a pick-up artist teaching seduction skills. The four men head to the flashy nightclub, leaving behind their life troubles.

Hyungtae is a game programmer working on the ultimate online dating game. Working 24/7 on the 30th floor of the tallest building in Seoul, the company's future, whether or not it sinks to the bottom depends on the success of the game. Inju, a former champion swimmer, works on the bottom floor at the Sea World aquarium, feeding the fishes and seals. Hyungtae's company is running out of money, he desperately needs sleep, and a beta-test player with the login name "Byulee" has declared that she hates the game. As for Inju, she's working hard to perform as a mermaid but having trouble holding her breath. Hyungtae finds out that "Byulee" works in the same building and he sets out to make "Byulee" fall in love with his game and his online character "Mello." "Byulee" is in real life Inju, and when Hyungtae meets Inju, he soon finds that the game is becoming more real than he imagined possible.

As three friends prepare to enter adulthood with their high school graduation only a few months away, they lose June after he dies in a fire. His girlfriend Chae-young (Ha-Neul Kim) seeks solace with June's close friend Do-ki (Ji-tae Yu). Do-ki has loved Chae-young for an extended period of time and inches towards revealing his feelings. As they hold an impromptu funeral ceremony for June outside of their high school Do-ki and June kiss for the first time. It's obvious to Do-ki that Chae-young still thinks of June even when they kiss. Two teenagers then approach with one having an uncanny resemblance to June. The four soon to be friends then go through an extended period of self discovery as they experiment with sex and drugs.