The X from Outer Space

AAB-Gamma, a spaceship sent by FAFC in Japan, embarks on a mission to Mars to explore strange UFO sightings. As the crew approaches the planet, they stumble upon a bizarre UFO that envelops their ship in peculiar spores. After bringing a sample back to Earth, it rapidly evolves into a colossal chicken-lizard-alien creature that wreaks havoc across Japan. This unexpected menace transforms an ordinary exploratory mission into a frantic battle for survival against a monstrous invader.