A baby girl gets left at the doorstep of Big Time Rush, and Logan Henderson agrees to be the baby girl father. Then two months later a two year old shows up at the band doorstep, and Logan takes her in and decided to be that one dad as well. Can he raise the baby and the two year old and still be in the band? Can he juggle fatherhood or will it be too much for him? Can him and Erin be a family to the two year old and the baby girl?