This work features a video submitted to the editorial department of an SM magazine, centering on Kikue, a company president's wife who has never been involved with any man other than her husband. She falls into a trap set by her younger sister, Mitsuiko, and is captured by her brother-in-law, Ryo, a sadomasochism enthusiast. Ryo subjects her to an extreme special act—vaginal fisting—as part of her transformation into a complete female dog. The story kicks off with the outrageous scene of both sisters undergoing fisting, and continues with Mitsuiko and her husband performing sexual acts in front of Kikue, whose body remains perpetually aroused.