A promise between the two young men who met years ago, growing up together, becoming bestfriends despite the past of Kim Jongin has, then becoming a couple who either got looked down by people who despise the Gay relationship or people who envy them as a couple. What will happen if one of their promises is going to be broken after a few years be together?

Lee Taemin accidentally takes his interviewers phone and, in turn, finds a dance partner, a best friend, and a lover. TaeKai.