Hyoyeon,a girl who was seprated from her parent when she was little during a war with the bigbang tower. She enters a school called Fly Cube and meet this boy name doojoon. Doojoon knew he was not allow to fall in love because he and his group Beast  was sent on mission to find the princess of Black Angel tower. Beast was not a normal group they are the bodyguards of Black Angel tower. When the king sent the group to Fly Cube his last words was "Please find our daughter in 5 months or else everyone in this tower will die and remember the only way to find her is that she is very good at dancing , has the other half of our picture, and has a necklace around hr that said BAT."

--Will they be able to find the princess?And who is the princess?