After nearly 50 years of eye-poking and face-slapping, the Stooges decide to retire and tour the world with their dog, Moose. They start by touring America's national parks, however, with the stooges, it is truly a "kook's tour". This especially proves to be the case, for Larry, who despite his best efforts, simply cannot seem to catch a fish. Larry is driven to the height of frustration as he is continually outfished by Moe, Joe, Moose, and even his own hat!

Three druggists travel with a Milquetoast inventor, Schuyler, and his girlfriend, Diane, to ancient Greece on a newly invented time machine. There, the evil tyrant, Odius, takes a shine to the woman and has the guys enslaved as galley rowers using the excuse of the three druggists helping a rebel leader, Ulysses, escape. The rigors of the rowing pump Schuyler up into a muscleman with strength comparable to Hercules himself, who is in the employ of Odius. The threesome get the idea of raising money by promoting Schuyler as Hercules for a series of physical contests. Using a combination of his great strength and, a judicious use of a large supply of potent tranquilizers Curly-Joe brought with him, Schuyler is a success. However, this leads to trouble when the real McCoy learns about the imposter.