Susan is bored with all porn, even scat porn, until she discovers a new kink - Squirmies: Slimy, fat, genetically engineered worm-like vertebrates that invade the human body for human amusement. She soon becomes hooked, and auditions to become the star of the website's newest video.
Our protagonist meets a lovely young woman on the Internet. At their first date in person, she confesses that she isn't human. They go somewhere private for her to prove this to him, and when she does, sparks fly. Warnings: Body horror, sex with a monster.