An ordinary kind-hearted girl named Park Kyungri, a simple girl, falls for the most unexpected guy, named Lee Jaehwan, at the most unexpected time.

Park Kyungri, the simple Korean girl, who has an older cousin who she lives with and who is between the smartest in the whole highschool, usually has a bubbly and lively personality, but she can change it in a split of second.

Lee Jawhean a.k.a Ken, the richer Korean boy, who lives with his best friend, has a lively and fun personality, he is pretty easygoing and fun to have a talk with. His personality and attitude is based on how the people treat and behave with him. What nobody knows is his deep secret, a secret pasion for a certain secret thing.

Jung Taekwoon and Lee Euaerin, Ken's best friend and Kyungri's cousin are the secondary characters in this story.