Jessica and Tiffany were chosen to go undevover as High School students at a small highschool named St Bedes Catholic Highschool, which is located in the United Kingdom. This was actually Tiffany's High School from when she was a predebut. 3 years has passed and her former class is currently in their last year. 

The pupils think that they are documenting a T.V program about their school, but in reality it is about the two kpop idols. 

Will they do good keeping it in? 

Couples:

Jeti and JungLi