Martin feels that his youth is fading and asks Tim to help him rejuvenate himself with the aid of Black Light. However, things go awry when Tim screws up the process and Martin gets turned into an infant.

On Martian Mother's Day, Martin spots his mother's lookalike.

In the desert, a gun-wielding camper spots Tim and Martin working on the spaceship.

Uncle Martin mistakes a hobo, Shorty Smith for a Martian Scout and brings him home. Shorty quickly becomes accustomed to the comforts of life and when Martin learns the truth, Martin and Tim have a hard time getting rid of him.

The time machine takes Tim and Martin back to 13th-century England.

One of Martin's odd gadgets makes Mrs. Brown two-dimensional.