Max draws a bunch of numeral thirteens, which gradually coalesce into Koko; a haunted house is drawn. Koko sends Fitz in to look for his hat, but the sounds of fighting draw in Koko, who discovers lots of spooks within.
One of the pleasures of the Fleischers' Koko cartoons was the manner in which a setting might be drawn, only for it to have dimensionality. Here, a setting appears, the haunted house's exterior, yet it has a cartoon reality beyond Fleischer's illustration. It lends a surrealistic solidity to the cartoon universe that is spooky in itself, and well suited to this Halloween cartoon.