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.

Spike Fumo is an Italian kid apsiring to be a boxer. He falls in love with a rich girl, who turns out to be the daughter of a Mafia boss. Spike is threatened to leave Bensonhurst by the mob, and then goes to a poverty-stricken Puerto Rican part of Brooklyn.