Yoon-jung accidentally calls a stranger, instead of her boyfriend, and has phone sex with the unknown man. When Yoon-jung's relationship with her boyfriend turns sour, Yoon-jung meets Hyun-seung, the stranger she had phone sex with.
Hong Seol, a student from a poor family, meets a rich Yoo Jung, who is her senior at her university. They both develop a rather inconvenient relationship after knowing each other.
A school director is forced to train the 'worst' students of his school to master Taekwondo as the old coach, taking along the best of his athletes, left the school.
Jae-ho, who aims to become the number one in a crime organization, gets to build up trust with Hyun-su, an ambitious newbie in the prison. While they try to take over the organization after the prison release, their ulterior motives starts to emerge.
In order to inherit his grandfather's fortune, an incorrigible playboy agrees to teach high school for two years in Mr. Wacky, a bland, mostly irritating comedy from newbie director Kim Dong-Wook. To its credit, the film improves considerably in its second half, but by that time, some will likely find that it's a case of too little, too late.