My little Alpha

When Jungkook's Alpha groom back out from their marriage on the wedding day, Jungkook is forced to accept a marriage with groom's lost younger brother, who they found only one and half year ago.

Kim Taehyung is stuck with a mentality of 10 year old kid and without a wolf after an accident he survived two years ago.

Will Jungkook be able to handle this marriage? Or will be crumble down finally.

What is Taehyung's past? Who really is he?