Seok Rae-myeong
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.
Dong-won is a down-and-out artist who suffers from despair and dissatisfaction and suicidal tendencies. During a trip to Sorak mountain, he tries to kill himself. He falls in love with Sun-hi, the cabin owner's daughter. For a short time, he experiences true love. But they break up because of Sun-hi's mother. Dong-won becomes a fork crane driver but cannot escape his unhappiness. One day, he travels to Sorak mountain and meets Sun-hi and their son. Sun-hi she urges him to apply for the national art contest. But he fails to get selected and he curses his life and dies in a fork crane accident.
Nicknamed Yalkae, notorious high school prankster Du Su (Lee Seung Hyun) is always up to no good with his buddy Yong Ho (Jin Woo Young). Both of them have been held back a year, but instead of studying they continue to cause trouble for their teachers and classmates. Du Su gleefully pulls a prank on his tattling classmate Ho Cheol, but he has a change of heart when he finds out Ho Cheol gets injured as a result.
