The Stooges meet up with eccentric Professor A.K. Rimple (Benny Rubin) and his daughter (Doreen Woodbury) who ask the trio to help them with a space mission. The mission lands on the planet Sunev (Venus spelled backwards), where the Stooges are taken in by three attractive female aliens. At first, sparks fly (literally) when the girls kiss the boys. But then the ladies turn cannibalistic, and are about the suck the Stooges' blood. However, the boys are able to escape, as a huge lizard appears on the horizon, causing the women to run away. The three jump back in the rocket ship, knocking the Professor and his daughter out cold, and fly back to Earth. They are then shown relating the story of their adventure to an assembled group. When they finish, the "Liars Club" presents them with the award for being the biggest liars in the world.