Like the others Code Name, this is about Yunjae, known as Jung Yunho and Kim Jaejoong. The two men were two trainees in SM Entertainment at their teens to become lovers and husband and husband at their thirties. However, the peaceful life they had was not given to them overnight. It was a long battle of life to be recognised as who they are. Of course, their long road to be able to love each other freely was always supported by their three dongsaengs, Park Yoochun, Kim Junsu and Shim Changmin.

Now that all the other members have settled down in their lives with wife and children, excepted Yunho and Jaejoong as they are committed to each other, the Yun to the Jae is always trying to cut their ties with the three others spoilsports who make his life a walking hell as they always play the third wheel with their children when the man wants his alone time with his beloved.