One day, Maguru and the twin monsters invaded the Earth. Moroku, the captain of the Earth Defense Force MAC, immediately transformed into Ultraman Seven to fight. However, he was defeated. Fortunately, Ultraman Leo showed up to help him and they drove the monsters away. In this battle, Moroku was seriously injured and crippled, and his Ultra Glasses were damaged, so he could no longer transform into Seven. Therefore, he sincerely invited Hogen (Ultraman Leo) to join MAC and entrusted him with the important task of protecting the Earth.