Claiming to be concerned about mankind's advancement into space and fearful of our destructive nature, a group of supposedly peace-loving Martians travel to Earth and insist on total disarmament and the formation of a global government. If the human race does not comply, the space visitors are prepared to disintegrate the planet using their advanced technology. However, when the Martians vaporise a bunch of kids to show that they mean business, luchador Santo smells a rat. Sure enough, the aliens aren't interested in peace -- they're planning an invasion of Earth -- and it is up to the masked Mexican wrestler to send them packing.
From the beefy, shirtless, male Martians in silly wigs and silver capes and the beautiful busty blonde female crewmembers in matching leotards, to the many badly staged wrestling scenes, to the ridiculous sci-fi special effects, which include a hilarious hubcap flying saucer, an 'astral eye' vaporiser, and a transformation chamber that changes the Martians hairstyles and clothing, Santo vs The Martians is pure '60s camp. The fantastical elements are entertaining for their sheer cheeziness (the budget was obviously very low), and a dance routine by the four sexy female aliens is hilarious, but the fighting, of which there is quite a lot, is fairly dull, unless you happen to particularly enjoy watching burly, sweaty, semi-naked men grappling with each other.
