Hyeon-joon, who transferred to Gwangsanggo, meets Jin-won, Byeong-yeon, and Yeong-soo, who are armed with a knuckle, and forms to be the fourth musketeer. As the Four Musketeers continued their fearless moves, the rest of them showed up one by one. Face it! The unprecedented and ignorant youth tournament begins!
'Typhoon' made a name for fighting in middle school. He decided to forget the past and live a quiet life, but his resolve crumbles when he collides with school officials. Meanwhile, 'Sang-min', who stands at the forefront of the Iljin group and leads it, and 'Ik-jun', a gangster who controls it from behind. The 'Sang-min' gang and gangster senior 'Ik-jun' and gangster extort money by blackmailing male customers who want to use female students to have an aid relationship. 'Typhoon', who does not join the school Iljin, runs into conflicts with the Sangmin and gang, and the two of them are in a situation of improvisation...
Refusing to allow fate to decide whom she must marry, Princess Songhwa decides to find her own husband. She seeks the help of a man to interpret her marital harmony with four men she wishes to marry.