Innerspace is a 1987 science fiction comedy film about a hapless store clerk who is accidentally shrunk down to microscopic size and injected into the body of a hypochondriac. As he tries to find a way out, he discovers a plot to steal valuable secrets from within the human body. With the help of the hypochondriac and a scientist, he must navigate through the inner workings of the body to save himself and stop the thieves.

Dennis Quaid, Martin Short, Meg Ryan