Ultraman Rosso and Blu have received the good wishes of the people of Ayaka City to protect them! However, there is a citizen of Ayaka City who just cannot forgive these two Ultramen. That man, is Makoto Aizen. He suddenly summons both brothers to him as he thrusts something towards them. Just then, in the midst of the attack, a jet-black Ultraman Orb explodes onto the battlefield…

Brothers Katsumi and Isami have completely lost their first fight against Ultraman Orb Dark! Ultraman Orb Dark slowly starts to win over the hearts of the people of Ayaka City after pointing out Ultraman R/B’s inexperience at being heroes. What do the brothers discover when they look into their own immaturity? What is the true aim of Ultraman Orb Dark? Ultraman Rosso and Blu begin their re-match to earn back the hearts of the people of Ayaka City!

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…

Halloween is finally here! Asahi tries to organize a fun Halloween party with a Dada alien, but no one shows up! The two people from across the universe gather together in hopes of organizing a great Halloween party! However, Asahi’s two Ultra Brothers start to notice that the Dada alien is acting somewhat strange. This starts to cause great confusion and disorder at the party. Will everyone be able to truly enjoy themselves?