22-year-old student Hong Cho Yi is dating a guy from the last year, their relationship is like a roller coaster, temperamental and explosive Cho And bumps into a young man who is not ready for a serious relationship yet. One day a girl sees her boyfriend in a cafe with a classmate, unable to contain her jealousy, she makes a scandal and the couple finally quarreled.
Hong Cho is upset and angry, but not discouraged, she has a lot of friends and girlfriends, besides, quite unexpectedly, she meets a guy living next door - Yun Dan, despite his young age, he is calm and thoughtful, has a cool-headed balanced character. This young man loves coffee. When he met Cho Yi, bright as a firework, he became interested in her. He will be able to become completely different when he tries to open up and understand the charm of the sharp temper of his beloved girl.