Doojoon and Kikwang have been  friends since preschool and literally "BEST FRIEND" being insperable just like normal best friend but  what if Kikwang have to move to U.S? how will they keep contact? And be BEST FRIENDS FOREVER..

The kpop band group B2ST's leader Doojoon feel rather lonely around his bandmate especially Kikwang for having a puppy. So while one day when Doojoon was walking to the store he decided to buy a puppy. Later on he has a strong bond with the puppy which creates jealousy over the members especially Kikwang and yoseob. What will happen?