Test pilot Tuck Pendleton volunteers to test a special vessel for a miniaturization experiment. Accidentally injected into a neurotic hypochondriac, Jack Putter, Tuck must convince Jack to find his ex-girlfriend, Lydia Maxwell, to help him extract Tuck and his ship and re-enlarge them before his oxygen runs out.

A series pilot about a secret agent who is armed with skills learned by a computer-brain link-up -- lasting only 72 hours at a time -- and is sent to rescue a Russian submarine commander, a defector who has been kidnapped by an agent for another nation.