David Grybowski

The first of two compilation films for Ultraman Great (aka Ultraman: Towards the Future). Jack Shindo is an astronaut doing research on the planet Mars. On a routine mission to survey the desolate landscape, he discovers mankind's greatest threat, Gudis, whose monsters have been ordered to kill all life on Earth. Jack must work with the mysterious colossal alien Ultraman and the Universal Multipurpose Agency to save humanity from extinction!

Jack Shindo and Stanley Haggard are members of the first manned expedition to Mars, and on the red planet find a giant slug-like monster, Goudes/Gudis. Shindo is pinned by a rockslide and Haggard tries to escape in their ship but is blown up by Gudis. Suddenly a giant warrior, Ultraman Great, arrives and fights Goudes, but when Ultraman is on the verge of victory Goudes changes into a virus and travels to Earth where it mutates other creatures into monsters and awakens existing ones. Needing a human host to survive on Earth, Ultraman joins with Jack, allowing him to become the mighty alien when all seems lost. He joins UMA in order to help them battle the monsters.