After finding a mysterious key on an unmarked grave, friends Michael Bates and Brian Moore embark on a cross country road trip to find its owner.

Michael Bates and Brian Moore are friends despite being different in personality. Michael is straightforward and is harboring anger issues which he doesn't even realize. Brian is a spiritualist, always on the look out for the good in people. Both are having a difficult time in their respective lives. Michael seems to be more committed to his live-in girlfriend than she is to him. And Brian is fired from his job as a mechanic because he over-analyzes the customers rather than do his work. To get away and have some fun, the two decide to take a weekend fishing trip to the lake. Once there, they find what looks to be a unnamed grave marker in the middle of the forest. With only a key close to the grave with the stamp "PUM ZACH" as a possible clue, Brian talks a reluctant Michael into finding out who owned the key and is therefore the probable person buried.

The story is about Nagatoshi, a handsome and sexy monk played by Kazuhiro Sano, who is struggling for the widow he loves. Foreshadowing the prophecy of the Great Kanto Earthquake, the film is a highly entertaining theatrical spectacle that depicts the human condition of a downtown area undergoing development and the efforts of men and women who rebel against it.