Koichi Kamiya is a normal middle school student, but one day a mysterious voice wakes him up from his dreams and asks him to fight against evil in the name of Babel II. The next day, he meets Juju, Wong and the powerful Lord Yomi, who is trying to gather a powerful group of people with psychic powers in order to take over the world. But first, he needs Babel's Legacy, a tremendous power which can only be used by Babel's successor, and this successor is, of course, Koichi. With the help of Rohdem, the black panther, Robross, the giant bird and Poseidon, the giant robot, he will protect the Earth from Yomi's evil forces.