After wrecking his car on the way to work, Dr. Benjamin Cotter's day gets worse when he is abducted by Cyril, an alien bounty hunter. Cyril has landed on Earth in pursuit of Peter, a resourceful fugitive alien who just happens to possess a device (the BAT) than can cure any disease in any species. When Peter innocently uses the BAT on humans, he draws the wrath of dangerous and powerful adversaries - a pharmaceutical start up, a major health insurance corporation, and a super-secret governmental agency. Their attempts to capture Peter and steal the BAT are thwarted when Peter receives help from a cynical liberal-arts major administrative assistant and her retired steel-worker father. When Dr. Cotter escapes Cyril's clutches, he joins forces with Peter. But in the end it takes a more powerful force to save the BAT - and to cure the humans!