Charles Bronson and Toshiro Mifune star in the story of a Western outlaw and a Japanese Samurai who must work together to recover a stolen, jewel-encrusted sword in Red Sun. The sword is priceless gift from the Japanese Emperor to the President of the United States. Now, honor demands that if the sword is not recovered within seven days the Samurai must kill himself... and his outlaw cohort. Based on a true incident from 1870.