Scrappy kid gloves champion Muggs McGinniss (Leo Gorcey) is all set for a title bout with the West Side's contender when he gets abducted by a pair of racketeers. Muggs' pal Danny (Bobby Jordan) is forced to box the match, winning the belt but losing thetrust of Muggs, who believes that Danny masterminded the kidnapping. The tense rivalry between the two continues to escalate, with Muggs playing the sore loser to Danny's success at winning a jitterbug contest. Yet with all the tough-talking bluster and duke-outs, both Danny and especially the hard-headed Muggs steadily learn the values of loyalty and honor, leading them to answer Uncle Sam's call. All the components of the East Side Kids adventures are found in Kid Dynamite, including Glimpy's (Huntz Hall) usual goofy antics, the street-savvy shenanigans and laugh-out-loud banter, much of which was written by Morey Amsterdam, that is constantly peppered throughout the film ("Muggs is so tough he told Joe Louis where to get off." "He did?" "Well, they were both on the same streetcar at the time."). It is considered by audiences to be one of the best installments in the East Side Kids series!