The Challenge is a 1970 made-for-television movie starring Darren McGavin and Mako. Director George McGowan chose to hide his involvement by using the pseudonym Alan Smithee.
An American space satellite lands in an uninhabited area of the Pacific. To resolve a dispute that threatens to escalate into all-out war, the United States and an unnamed Asian country agree to settle the matter with a duel to the death between two champions on a deserted tropical island. As Vietnam veteran Jacob Gallery (Darren McGavin) (armed with two Madsen M-50 submachine guns placed side by side) and Yuro (Mako) stalk each other, a bond of respect forms between them.
However, both countries cheat, each covertly sending a second man. Outraged, Gallery and Yuro eliminate their backups and continue with their deadly contest. In the end, Gallery emerges victorious, but before he can signal the outcome, he succumbs to his wounds.