Sex Is Zero

28-year-old Jang Eun Shik is a first-year college student. He's also a member of the school's Chayon Ryu club; a form of martial arts where members endure painful endurance training. Jang Eun Shik then falls for gorgeous college student Eun Hyo, though she doesn't have the same feelings for him. Eun Hyo falls for rich playboy Ham Sung Ok, who seems to take an interest in Eun Hyo even though he is already dating popular Kim Ji Won.