Chitei Senkuu Vazolder

In the year 1999, the world is suddenly facing intensive natural disasters. Scientists are perplexed and decide that research on the inside of the earth is needed. To this end, an underground vehicle is constructed to explore the underworld. They call it the VZR, but the crew know it more commonly as a Wurm. Four different Wurms have already been dispatched and mysteriously disappeared, so a fifth Wurm vehicle is ready to launch crewed by the best and the brightest. Crew Chief Moby has been chosen to lead the mission, even though she has lost both her love and father on previous Wurm missions. It will be up to her and the crew to figure out this mystery and rescue the other Wurm members. There's also a matter of mysterious crystals that have been found underground...