This knee-slapping comedy follows a unique story about three friends, Chi-Ho (Kim Woo-Bin), Dong-Woo (Lee Joon-ho/Junho), and Gyung-Jae (Kang Ha-Neul). Each of them has just turned 20 years old and the world is their oyster. With new opportunities, they can do what they want, love who they want, and even, cause a little havoc here and there.