Mari feels undesirable after a long sexless period with her husband, so her father-in-law suggests tempting him in daring lingerie. Aroused by the sight, he repeatedly begs to put it in for just one minute until she gives in. His unexpectedly tireless cock and fierce thrusts overwhelm her restraint; even after the minute passes, her hips keep moving and the penetration continues. Eventually, with her husband secretly listening in the next room, she pushes her father-in-law down, rides him to orgasm, and admits that his cock is the one she wants.