Jung Hoseok is the second son of the president of a large Korean conglomerate called Sangdan (Top) Group. He was sent to study abroad in the U.S. by the request of his older half-brother Min Yoongi, who is worried that his younger brother is going to be the one to take over the company and not him.Yoongi has befriended a girl by the name of Han Areum; a student Hoseok's age who lives with her deaf mother. On his return to Korea, Hoseok meets Areum by chance and is completely smitten by her. K

Kim Jaeeun spent her entire life being protected by her older brother. From the day he moved out for college she began to experience life like she never had before. When Namjoon comes back for break with his friend Min Yoongi in tow the last thing he expected to see was his baby sister no longer being the innocent teen he left her as and for Yoongi to actually be interested in her. 

When Song Areum is sent to give her classmate the work he missed but on the way there gets attacked by one gang and is saved by BTS, the gang her classmate is in. Word gets out that BTS is protecting a girl and now she's being targeted by their rival gangs. A now she's living with them because it's their fault she's fallen into this dangerous situation. Yet as each day passes with BTS, secrets get revealed. BTS slowly grows to love Areum, only to have her ripped away by GOT7.