According to the flawless wikipedia, Goemon is a Japanese given name that refers to Ishikawa Goemon, a legendary ninja warrior and bandit hero notable for being boiled alive after a failed assassination attempt on Toyotomi Hideyoshi. More likely though, the movie is about Goemon Ishikaya XIII, his fictional descendant appearing in the anime and manga series Lupin III.

On another note, the Director Kazuaki Kiriya is also the editor, writer, cinematorapher, and producer for the film.

Teaser Trailer for Goemon