Noh Dong-wan look like 40 years even though he is only 23. He has a crush Joo-ri, a childhood friend who really lost his mind when he was drinking. However, Dong-wan not people to him. Then one day, intresting things start to happen when a beautiful woman appeared trainer at the gym where Dong-wan, Joo-ri and yoga instructors work. Dong-wan will be able to tell Joo-ri feelings?