When the dormitory of a coveted private high school, called Alps, is about to close due to financial difficulties the girl step up to the challenge. The student residents plan to stop their dormitory from shutting its doors.

When realty TV host Carlos Kurozaki breaks into a mysterious underground pyramid for a television event, he removes a special gem. . . and unwittingly releases a diabolical monster called Zaigorg! The evil creature wants Kurozaki's gem, so it spawns an army of giant kaijus to get it! It's up to the famous superheroes Ultraman X, Ultraman Tiga, and the one and only original Ultraman to stop the worldwide monster war!