Working at her father-in-law's company are the Tsujii couple. When her husband goes on a month-long overseas business trip to expand operations, his wife Honoka is initially set to accompany him as his interpreter. However, at her father-in-law's strong urging, she gives up the plan. Left alone with him during her husband's absence, Honoka gradually opens up to her kind and cheerful father-in-law, despite her initial unease. But his kindness is actually part of a calculated scheme. Sensing her emotional vulnerability, he uses her husband's position as leverage to coerce her into a sexual relationship. Forcing her into a maid outfit, he transforms Honoka into his personal sexual plaything, deepening their illicit bond further and further.