Mike Mancini, a usually reserved therapist, finds himself ensnared in a wicked game of cat and mouse with his stepdaughter, Ava Davis. She manipulates their session, playing the part of a shy, anxious teen, while subtly revealing her hidden desires. Mike's professional demeanor crumbles as Ava's words paint vivid images of their forbidden liaison. Julia Robbie, the real therapist, watches unseen, her presence adding an extra layer of taboo to their roleplay. As Ava's words grow bolder, Mike's resolve weakens, and their family bond shifts into something deliciously wrong.