The Minstrel, a medieval lute-playing electronics genius, sends the stock market into an uproar when he alters the computerized stock quotations; he later airs a televised ultimatum, demanding $1000 a week from each exchange member, or else stock quotations wil be further disrupted, causing the market to crash! The Caped Crusader and The Boy Wonder try to capture the musical maniac later that night when he tries to realter his crooked circuitry, but Minstrel blinds The Dynamic Duo with one of his devilish devices and beats a rhythmic retreat.

The Batman tries to track The Minstrel to his hideout by using The Batdrone Plane to trace the TV signal The Minstrel used to televise his ultimatums. But he predicts The Duo will attempt just that and decides to broadcast from his criminal studio at The Willow Street Warehouse rather than from his normal hideout. Batman and Robin later locate the warehouse by Batmobile and sneak in, but not before The Batman sprinkes a few precautions along the corridor: Adhesive Batbombs. The Dynamic Duo attempt to surprise The Minstrel but are caught and tied to a giant eletronic spit which will slowly roast them over an electric radar grill!