The forces of evil are attempting to recapture a human-inhabited Earth-like planet that has been liberated by rebels. The son of one of the rebel leaders, an electronic genius, searches the galaxy for a hero and finds Captain Zoom, star of a 1950s TV series. He is transported to the planet as its savior, which role he must play despite himself.

Eddie, a struggling animal trainer and single dad suddenly finds himself the personal wrangler for a large and lovable St. Bernard whose fabulous movie "audition" catapults the dog to stardom. However, a trio of unscrupulous ne'er-do-wells have plans to kidnap the famous dog and hold him for ransom.