One day, all the members (except for Rapmon) start to bicker, which leads them to an argument. Each one blames the other for not knowing what it's like to be that member.

The managers bring in a box of drinks for each member to drink, which was send in by a 'fan'. The members didn't think much of it and drank the drinks, later going to sleep early for their schedule the next day. 

They all wake up and feel different. Some feel shorter, taller, more muscular, and etc. The whole house is filled with screams when they all look in the mirror to see that their in a different body! 

Will they be able to switch back?