Gongchan, the makane of b1a4, with his innocent face and cute smile he could make everyone fall for him but what if the one person he actually wants to fall for him only thinks of him as a dongsaeng (little brother). So Gongchan is coming up with a plan to make his hyung try to see him more than just a little brother and eventually fall in love with him, but will everthing turn out as expected...