A los cien días de relación, Hae-Yeong es dejada por su novio; una fecha muy importante para ella. Hyeong-Jun es un hombre adinerado y guapo que vuelve locas a las mujeres allá por donde va, pero no está interesado en citas. Un día él está conduciendo su lujoso coche, y Hae Yeong, disgustada por su reciente desilusión amorosa, da una patada a una lata con tal rabia que impacta en su cabeza. Debido al golpe, pierde el control del coche y choca contra una pared. Como ella es incapaz de pagar los gastos de la reparación, Hyeong-Jun la persuade para que firme un contrato que la convertirá en su esclava durante 100 días...
Cuando una mujer como Eun jin: experta en artes marciales, en el uso del cuchillo y que además es cabecilla de una peligrosa banda mafiosa, se reencuentra con su hermana mayor y esta le pide que se case con un buen hombre que la haga feliz, los problemas para esta atractiva e implacable gangster sólo acaban de empezar
A novelist has an affair with two women, finding fulfillment in neither; a married businessman strays from his wife he can't satisfy; a naive young woman surrenders her dignity for her lover; and a married woman tries to find solace in a frustrating affair.
A young male model twists and manipulates people around him in his unending quest for money and pleasure. He is convinced that he is untouchable and can bend anyone to his will, so not even murder is an obstacle to his ambitions.
Yi-su, a 37 year-old professor, can't forget her first love Joon-ho who's missing in action in Vietnam. She meets Hyun-woo one day, who look surprising like Joon-ho. Hyun-woo investigates Yi-su who lives in the past and discovers that her pain stems from the Vietnam war. Hyun-woo can't help falling in love with her even though he's a student. On a trip to Busan, he confesses his love for her. But he soon realizes that the only man for her is Joon-ho. Min-cheol who fought along with Joon-ho sells his belongings to Yi-su at a high price. He tells her that Joon-ho died in a fire and they argue aggressively. Min-cheol commits suicide afterwards and Yi-su is also found dead in the campus pool.
After coincidentally witnessing a boy jumping from the rooftop due to pressures of the college entrance exam, our heroes conceive an idea for a learning device that works while you sleep. Dong-gi, Ho-tae, and Jae-ha go to Chairman Kim of an electronics company to get the funds to make it. They experiment the 'snooze machine' on their younger brother, Dong-seok. Once at the bottom of the class, Dong-seok goes to the top but he is ostracized by his classmates. They reject the snooze machine and shout, 'Let us live like human beings!' Ho-tae gets into an argument with the other two over the development of the snooze machine. He moves out but later is persuaded back by the great burst of laughter stemming from solid friendship. Arm in arm, the three face a brighter tomorrow together.
