Set in the 1940's, Ouma Se Slim Kind is an honest tale of the foibles of humanity, love and friendship, set against the often harsh, yet strikingly beautiful rural South African landscape.

In a series of short skits, Leon Schuster uses candid camera and several disguises to stitch up the general public of South Africa. Such sketches include: The watermelon pulse test, where Leon shows that a watermelon is only ripe when it does not have a heartbeat, much to the confusion of the seller. Cooking on the bonnet of a car, while upsetting the traffic police. Supposedly killing a cow in a butcher's shop.