Horio, a new employee, is feeling down after making a mistake at work. His boss, Tachibana, invites him to dinner to cheer him up. Horio regains his energy thanks to the delicious home-cooked meal of the boss's wife. But the main reason is that the boss's wife, Yuka, is a beautiful and sexy woman... That night, Horio stays at the boss's house, and in the middle of the night, he witnesses Yuka masturbating and moaning seductively!!