In the spring of 1978, Hyun-soo transfers to Jeong Mun High School in Kangnam where his mother thinks the land price will skyrocket due to the development of the area. Yet, as the timid model student who revered Bruce Lee will find out, Jeong Mun High School is notorious for its severe corporal punishment by teachers and power struggles between school gangs. While at the school, Hyun-soo falls in love with Eun-ju at first sight, nothing can stop his love for her. Eun-ju chooses Woo-sik over Hyun-soo, a charismatic womanizer and gang leader who just happens to be Hyun-soo's best friend...