B.A.D. Music Squad makes preparations for B.B.'s inevitable arrival. As Mcfly follows her trail, the Squad makes a surprising discovery as they lie in wait. Lazerwolf's visitor turns out to be none other than Kairi Wolf, his sister who traveled from his homeland to challenge him for his right to their father's throne. It's a right that he has no interest in claiming, but that won't stop Kairi from doing what she came to do. Will Wolfgang return to find a family reunion, or a bloody feud?