In 1849, a spurious map shows a sliver of land on the Eastern Seaboard labeled "USA", with all land to its west labeled "INJUN JOE'S TERRITORY". Porky Pig is leading a wagon train to California, and he must keep an eye out for the Herculean Native American "Super Chief", Injun Joe.
Porky and Injun Joe are repeatedly interrupted by a goofy bearded hillbilly named Sloppy Moe, who keeps repeating, "I know something I won't tell, I won't tell, I won't tell!" to the tune of London Bridge is Falling Down. This goes on until Injun Joe corners Porky with tomahawk in hand, and Sloppy Moe sings his refrain once more. Injun Joe demands, "What you know, huh???", and Sloppy reveals his secret at last, "Injun... Joe... is... ticklish!", and proceeds to prove that by tickling the chief with his hands and beard lacking a moustache. The Native American goes into a raucous laughing fit. Distracted, he backs off a cliff and falls deep into the ground, pulling the surface down with him, and causing the map seen previously to stretch the "USA" sliver across to the west coast, so that it now reads "UNITED STATES of AMERICA" from west to east. Moe tickles the giggling Porky.
