A Gift from the Sky (E34)

Patrolling the "Ultra Zone," Ide and Arashi discover a collection of monsters defeated by Ultraman and dub it the "Monster Graveyard." A lunar rocket collides with one creature from the Ultra Zone, and it falls to Earth. Seabozu only wants to return to its resting place. Since the monster appears to trust Ultraman, Hayata suggests building a rocket to send it back to the "Ultra Zone." (Prime Video)