Andy takes a summer job as assistant to a Mad Scientist, and finds himself helping a couple of colorful but impoverished gamblers. Their goal: Bring a super-racehorse called the Roan Ranger back to life, and hire the lovely Corduroy Brown to ride it in the Durk's Classic. But the evil leader of a gambling syndicate has plans of his own, and soon it's up to Andy to rescue Cordy from the mob, his friends from the poorhouse, and the Roan Ranger from the knackers!