So a tornado carries Dorothy to the Land of Oz, where the Scarecrow, Tin Man and Lion characters are introduced. But it isn't really the Scarecrow, Tin Man and Lion -- it's the horny farmhands in disguise, hiding from Ambassador Wikked and Prime Minister Kruel, presumably while President Badd Guye and Emperor Stok Kharakter Villun were vacationing in Helll. Dorothy is crowned Queen of Oz and marries Prince Kynd (sigh) and decides to stay in Oz forever, because hey, why not?
Meanwhile, the Tin Man turns evil and tries to kill the Lion and the Scarecrow. Then the Scarecrow falls out of an airplane and dies.
Doesn't matter. You cannot kill what dwells within that.
This celluloid travesty bankrupted its studio and shockingly never got a wide release. Which is probably a good thing, considering how much sooner fan fiction would have gotten off the ground if it had.