One night in 1968, a strange blue moon dubbed the "Death Moon" is spotted all over the Earth. During this time, Taku Nakazou and his family flee Japan due to his father's involvement in the arms trade. Tasked to go to a remote part of Southeastern Asia, the family later meets two other strangers with extraordinary powers. The new group, while traversing to meet with their "employer", are transported back in time on the Moon. The Reason: to fight in an ancient intergalactic war for the fate of the moon!