Nana the most beatiful idol, attracting men from across the world. She comes from the group afterschool. Afterschool have never really got involved with male idols as their manager is very scrict on dating, all afterschool hopes is that they can meet and do a duet with males. However one day afterschool meet Shinee after a concert. Shinee was waiting in their room as they were instructed by their mangers. Exo also was waiting for them. Their manager's had planned a surpise variety show for the idols. Crayon pop was also invited. They have to go through  challenges and competitions while living under one roof. Nana whos has never dated a man never mind lived with one is very nervous and frightend. What will happen in the house!

Main characters: Nana, key, kris, ellin, raina, taemin