The Minstrel, a villain with both musical talent and electronic ingenuity, is wrecking havoc with the Gotham City Exchange in an attempt to blackmail the exchange members. When he soon realizes Batman and Robin are equally skilled with electronics, he deems them a threat to his plan and sets a trap for their demise.

Failing to destroy Batman and Robin, the Minstrel enacts "Plan High C." He shakes the building of the Gotham City Exchange, and promises to send it crumbling down if his demands are not met in one hour. Batman assumes cutting off the building's power will thwart the villain, but when that plan fails, it's up to the Dynamic Duo to track down the Minstrel before it's too late.