Back in high school, Katsumi was a pitcher for his high school’s baseball team. The eldest of the Minato siblings gave up on his dreams when their mother disappeared so as to support his family. Katsumi shows off his burning fighting spirit in a retirement match for a local baseball team’s coach. Katsumi is injured during a battle with a monster and uses the coach’s words and skills as a pitcher to find renewed determination in his mission as Ultraman.

Asahi has run away from home…! She was unable to find any proof that she was actually a member of the Minato family, and its really hitting her hard. Who is she? Asahi confesses her feelings to the mysterious woman, Saki Mitsurugi. Is she an enemy or an ally? Meanwhile, another kaiju, Neronga, appears in the city with the ability to cut family ties! The Ultra Brothers rush to fight against the kaiju, but they’re constantly worrying if their sister will ever join their family again…