Kacie Castle, a lesbian submissive, finds herself in a provocative session with Sinn Sage, her sex therapist turned dominatrix. Sage introduces her massive strapon, commanding Kacie to worship it. Kacie eagerly takes it into her mouth, gagging on its length. Then, she's bound and bent over, Sage's hands spanking her ass before whipping it raw. Kacie's moans intensify as Sage penetrates her ass, fucking her hard and deep, leaving her a whimpering, bound mess.