Teppei has a older brother, Kotaro who is a genius and is kidnapped by the evil Machine Empire. Teppei meets Metal Face and his B't Madonna, who injures Teppei. Bleeding badly, his blood reactivates B't Raphaello.
Teppei seems to think that Karen's partner X has become his ally. After Metal Face and his B't Madonna leave, Teppei and X get attacked Fifth Unit Ryukon Troops.
Teppei gets treated in Fou's chapel. Kaas takes some of the children hostage. Je'taime, Fou, Teppe and X have to work together to stop the soldiers from reporting to the Empire.