Joohyun and Sooyoung have always known that their feelings aren't just one-sided love. But they also knew that being together isn't a decision they could make.

There has always been hesitation in Sooyoung's mind to take a decision after she ruined everything in the past.

Bae Joohyun and Park Sooyoung are supernatural creatures, just like other kids detained in a place of torture that is pretended to be a training facility. But what if they’ve prepared a plan to escaped from that building?