Kaori (Riko Narumi) is a intense kendo fighter who has been training since she was young. Sanae (Kie Kitano) is a girl who has only participated in kendo casually, but somehow manages to beat Kaori in the final tournament of junior high school. Although Sanae doesn’t particularly care about it, Kaori holds a grudge, setting up a rivalry that bleeds over into high school.

Ultraman Orb teams up with Ultraman X to battle the evil witch, Mulnau, who seeks to add Earth to her jewelry collection, with the help of Orb's long-time rival, Jugglas Juggler!