Kazuma and Anna arrive at the remote mountain estate, where its elegant isolation hints at secrets kept from outsiders. The arrival stirs unexpected curiosity when Kazuma witnesses the maid Suzuka’s strict training, awakening desires he had not anticipated. Drawn into the household’s intense atmosphere, he shares a passionate connection with resident Miyahara Maki that quickly deepens. Their mutual attraction marks the start of an unsettling two-day immersion in the family’s hidden indulgences.