Too lazy to type.. Im in class now but good thing need to be spread quickly as i can so... click the link..

Ommona!! My babies grow up.... 

http://www.allkpop.com/article/2015/03/luna-block-bs-u-kwon-b-bomb-and-secrets-hana-confirmed-for-webdrama-jumping-girl

UPDATE :

since AllKpop doesn't give us a lot of info on this.. So i did the research myself... If you wanna know what the story is all about and what role are they playing.. Please click on the link below... This article is from BOnTheBlock.... Be prepared for April, fellow BBCs!!!

http://bontheblock.tumblr.com/post/112774251144/block-b-first-acting-challenge-since-debut