Their manager saved them from Boredom by informing them that they will have a new tv show; 

“’Who’s that girl’ will be about a male idol, that is you Sungjong, that will be disguising as a girl and attending a co-ed school for a month without being caught. Before any of you say anything, let me continue. The idol’s members will be the supporting cast, the supposed girl’s family, of which none should be caught also. All of you will be living on Jeju island for a month acting as an ordinary family."

However their manager cannot save them from the embarrassment they're about to experience...

* Warning! :there will be crossdressing and semi-gay relationships *