Jonghun's older brother (Chan) and Jonghun's girlfriend (Minho) are close friends. They both have a quiet life, but Jonghun is very troublesome, loud and lazy..

one day, while Chan and Minho were hanging out with their friends, Jonghun came home quickly and said, "That Neighbor's son is annoying me! We had an argument! (Actually, the neighbor's child is innocent)"