On August 15, ten years after the Pacific War, five people meet at a station. Their purpose is to dig out a cache of morphine -- now worth sixty million yen -- that HASHIMOTO, an army medical officer, buried in an air-raid shelter in this city on the day the war ended. The five are: SHIMA, a beautiful woman who claims that she is HASHIMOTO's younger sister and that her brother is dead; NAKADA, a pharmacist; ONUMA, who owns a Chinese restaurant; YAMAMOTO, a thug; and SAWAI, who says he is a junior high school teacher. But HASHIMOTO originally had only three accomplices -- and hid the morphine late at night, so they did not know each other's identities. There is one person too many in the group, but they do not know whom. A butcher shop now stands over the old air-raid shelter. The five decide to rent a vacant house across the street, and dig a tunnel to the butcher shop. They set up a phony real estate office in the house, which the landlord has rented to them under the condition that ...