Ai Tsuki works hard as a waitress, but she has a clumsy side that constantly gets her into trouble. Spilling water on customers or messing up orders has become routine for her. Her constant blunders only serve to ignite the fury of her seniors and the store manager. Her senior calls her in for a lewd training session, demanding strict correction through intense hands-on practice—forcing her to squeeze out thick milk and enduring relentless physical instruction. Then the manager steps in to teach her "the golden rules of customer service," drilling her thoroughly and wetly from basic etiquette to advanced techniques. Can Ai Tsuki overcome her clumsy waitress ways and finally graduate? Witness her dramatic transformation in this must-see performance.