The attractive lady who delivers probiotic drinks at the same time every day gradually becomes friendly with the office staff, to the point where light sexual harassment is tolerated. The desire to take things further and have sex inside the company begins to grow. The probiotic lady who comes on Tuesdays is a single mother in her thirties, cheerfully brushing off the employees' mild advances. However, in the president's room, she offers special services in exchange for bulk purchases. On Wednesdays, a veteran delivery woman known for pressing her breasts against people shows up. Today, she once again provides her signature breast service, and in the president's office, she performs sexual favors to secure a large order. One day, the single mother delivery woman brings a snack to an employee working late, and when they're alone in the office, they indulge in an unforgettable sexual encounter.