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!
Yoo-na, who had nowhere to go, lives with Allan, a foreign worker, at a small glass factory. Meanwhile, the owner of the factory entrusts Eun-ji, whom he sponsors, with the factory's accounting. Looking at Eun-ji and Allan, Yoo-na is confused as she recalls her past memories. President Kim, who has power in the factory, bullies Allan and the boss tries to rape Yoo-na. Having a lonely and hard time, Yoo-na and Allan get close to each other and new events occur with the knife of Sarasen, the only collection that Allan cherishes...
