In late 1942, Operation Kinder-B is secretly developed by SS officers to support Operation Bernhard, Germany's attempt to produce counterfeit banknotes intended to destabilize the British economy. But as a bomber takes off from Holland to make a special delivery to German agents operating in England, no one really knows if the counterfeit scheme will be successful or not. Harry Cole, a German sleeper agent living and working in Leicester, is mobilized to collect a parachute drop of counterfeit notes. With help from a Nazi sympathizer, he deposits the counterfeit money into a local bank and waits for it to unleash misery on the British banking system. But when the operation is suddenly aborted, the order comes too late. As a police inspector and his sergeant attempt to track down German agents and their accomplices, fate leads Cole in an unimaginable direction...