Sara is a mechanical being encountered aboard a giant ship by space pilot Takeru and human computer Martha. Alongside another mechanical entity, Ru Mi, Sara issues an urgent warning to Takeru and Martha: the alien Gump forces are en route to Earth, poised for imminent planetary takeover, with only 40 minutes remaining before the invasion begins. Following this encounter, Takeru departs in the combat aircraft Solvalou to confront the Gump base on the planet Andoa.