London River is hoping to reach some challenging fitness goals so she goes to Dana's Butt Building Emporium to make that happen. Dana DeArmond is known for her unorthodox methods but still she is the best and London wants results so she decides to trust Dana and boy oh boy is she in for a treat. Unlike other gyms Dana's philosophy is that you have to work out the whole butt including the butthole because after all, change happens from within.

In this brutal and intense session between the relentless Aiden Starr and her willing sub London River, boundaries are met head-on, and the line between pleasure an pain blurs. London River can endure all sorts of punishment, particularly when trust is well established, and her trust in Aiden Starr is immense. Aiden takes London through a screaming session of pussy punishment, flogging, caning, cropping, spanking, pussy licking, anal strap-on fucking and anal fisting, all while London is bound and tied, unable to resist or get away.