Plato is a long-established hotel that has been said to be a symbol of high-class hotels in Japan since its establishment and has led the industry. However, with the intensification of competition, its management has deteriorated. The number of guests has fallen and the morale of the employees has also declined. One day, a man is invited to become the general manager of the fallen Plato. In just a few months since taking up his position, he has made sudden appearances at various departments and services, including the concierge, restaurant, and wedding department, implementing cutting-edge operational improvements. However, employees have voiced opposition to him, and Plato is caught in a whirlpool of confusion. However, he has a hidden secret and another major purpose.