When it comes to plot, there just isn't much in "Indoor Sports by Tad". Because of this, it's a very forgettable film--even if it is an early example of animation.
The film begins with an obese woman going to the shoe store and insisting she's a size 3 1/2--though she's obviously much larger. Then, out of the blue, a cat and a stick figure appear and make fun of the woman--making fat jokes and the like. Then, abruptly, the film ends. I can only assume the final portion is missing. Overall, there isn't much plot and the film mostly consists of characters making fun of a fat lady. Not exactly enlightened entertainment, huh?! And, not particularly entertaining or distinguished.