Lee Minho is a young choreographer who teaches young students at the Academy of Arts, he is 25 years old. He lives with his best friend, Hwang Hyunjin. Minho is 4 years older than Hyunjin. Hyunjin studied dancing with Minho. Hyunjin is still a student from the same Academy. They live together in an apartment in the center of Seoul, on a beautiful skyscraper on the 40th floor.