During a championship baseball match, the three brothers hear that their grandfather in Japan is in trouble, and head out to help him, conceding the match. When they arrive in Japan, they must use all their powers to defend him against his ancient enemy, who has returned to exact revenge.

A struggling Japanese neighborhood supermarket manager chances upon an old classmate, who has plenty of ideas for revitalizing his business.

Melvin Junko was a nerdy weakling until he fell into a vat of toxic waste, turning him into the first ever superhuman creature from New Jersey. This time, he takes on Tokyo.