Zero Tester: Chikyuu wo Mamore!

Following a series of space incidents, the Armanoid aliens are revealed to be planning an invasion of Earth. Professor Tachibana, along with other world leaders, establishes a team at the Future Science Invention Center to counter the impending threat. This team, known as the Zero Tester Squad, is comprised of Shin, Go, Lisa, and Captain Kenmotsu. To aid in their defense, the team is provided with five state-of-the-art vehicles designed to combat the Armanoid aliens. The series focuses on the squad's preparation and deployment as they face the challenge of protecting Earth from the alien invasion. The core theme revolves around humanity's resilience and ingenuity in the face of an extraterrestrial threat.