Zach Gowen is coming back for revenge on Brock Lesnar. You see, Lesnar's the little girl referred to in the promo. "I cannot help you anymore" is Brock's 2003 heel turn on Zach when he pushed him down the stairs. "She holds the mystery of my arrival" is a reference to Lesnar's retirement from MMA. Zach wants to "claim what others have taken", seeing Brock probably pinched Zach's prosthetic leg after pushing him down the stairs (also the reason for all those shots of stairs in the videos).