A sentient motorcycle crash-lands on Earth looking for a hero. What it finds instead is a regular kid, zero qualifications, immediate panic. The comedy doesn't come from trying to make the premise serious, it comes from everyone involved knowing exactly how absurd this is and leaning into it anyway. The motorbike is funnier than the kid. The aliens are jokes with deadlines. This is what happens when a show trusts that watching someone fail upward at saving the world is enough.

Gekkou Kamen has retired and now lives on the moon. With the job of guarding Earth against alien invaders left open, his loyal motorbike heads back down to the planet to track down someone new to take up the role. Across 25 episodes, the TV series mixes comedy with science fiction as the search for a replacement defender gets underway.