
Newspaper reporter Tim O'Hara finds a crashed alien spaceship that contains one live alien. Not wanting to be discovered by the authorities, the Martian assumes the identity of Tim's Uncle Martin and begins to repair his spaceship so that he can return to Mars.




Martin must hide his ship from prospective buyers after Mrs. Brown puts the house on the market.
Mrs. Brown starts learning how to play the violin and Uncle Martin is affected by the notes.
Trying to help Mrs. Brown with over spending, Martin accidentally turns her into a miser.
While trying to loose weight, Uncle Martin has Tim help him and Martins spaceship is accidentally shrunk to toy size.
Uncle Martin looses his identity disk and things start disappearing.
Uncle Martin has a problem with his emotions and has to work with Detective Brennan helping Mrs. Brown paint while trying to keep his calm.
Mrs. Brown uses a Martian chemical without Uncle Martins knowledge, she then becomes irresistible to all men, Uncle Martin as well. Martin then plans to take her on a jaunt in his spaceship.
Uncle Martin has to find a way to recover a ancient Aztec chest which has a picture of him in it from when he visited Montezuma in the past.
Uncle Martin is using a time machine hoping to avert the accident that caused him to land on Earth. Tim messes the machine up and lands them both in 1215 England where they accidentally intercept the Magna Carta on it's way to King John.
Mrs. Brown losses her breadth and Uncle Martin puts her into a painting to protect her. Detective Brennan then takes the painting to a gallery and Martin and Tim have to break in to save her.
Uncle Martin rigs up a time machine and Detective Brennan messes with it and causes Uncle Martin and Tim to go back in time.
Uncle Martin studies aging on Earth and meets two old ladies with a talent for larceny.
Uncle Martin duplicates Tim by mistake when working on making parts for his spaceship.
Honorary deputy Mrs. Brown becomes a zealous guardian of law and order after taking one of Uncle Martins pills.
Tim is demoted to the Obituary column and he uses Uncle Martins time machine to try and get a big scoop. It backfires on him and he is blamed for a jewel robbery.
In an effort to seem more important, Alvin boasts that he is working on a top secret project with Uncle Martin.
Mrs. Brown steps in front of Martin's personality altecator and becomes a crook because of the book "The Criminal Mind" that was sitting next to the machine. Martin and Tim then have to keep up with her until they can give her the antidote.
Using his time machine, Martin brings Leonardo DaVinci into the present to help him with a mechanical problem.
Martin becomes the blood brother of the race horse 'Sweet Sister' when a mosquito bites the animal after biting Martin.