As Carter and Ryan attempt to flee the Skull Cavern, with the knowledge that Queen Bansheera is attempting to reclaim her homeland by unleashing an endless army of zombie demons from the Shadow World, the other Rangers are trapped inside of the Batling-infested Lightspeed Aquabase. While the Batling-piloted Lifeforce Megazord systematically destroys the Aquabase, and the Jinxer-piloted Omega Megazord levels parts of the city in preparation for the Queen's ceremony, can the Lightspeed Rescue Rangers rescue Mariner Bay one final time?