Makoto runs a small construction company and is married to Hiroyuki, his former subordinate. Despite economic downturns, his business remains stable, allowing them a comfortable, financially secure life. However, dissatisfied with Makoto's strict demeanor, his employees use Hiroyuki as their sexual outlet, subjecting her to daily intercourse filled with sweat, dust, and vulgar semen. This stems from a deep, hidden desire concealed beneath her dedication to work.