Momoko works as an executive at her husband's company, but his constant womanizing has reduced their marriage to a relationship between strangers. Then handsome new adult employee Saji joins the firm, and his earnest, innocent gaze fuels her fantasies. When she must take an overnight business trip in her husband's place, Momoko orders Saji to accompany her as part of his training. After closing the deal, she gets him drunk at a victory party and draws him into sex disguised as professional instruction, indulging in repeated creampies on the trip.