Ryoko, the proprietress of the inn where the birds sing. With no money to spare, a debt collector storms into the inn. Ryoko is deprived of her body without being able to pay. Not only that, Ryoko stabs the man who tries to take the deed of the land with a knife. In addition, a real estate agent visits and tries to get a deed in exchange for 5 million. Ryoko picks up the knife again. A recurring tragedy. Then another man comes... Ryoko kills men one after another...