Bimbo is flying along, playing the title song on his squeezebox when his plane crashes in the desert. He soon encounters an Indian maid whom he woos, but her tribe objects and soon has him burning at the stake.
Betty Boop had been introduced already, looking like a dog -- her spaniel ears would evolve into earring -- and here she is, closer to her best-known form as the Indian maid. Mostly it's the baby-doll voicing of the title song, done here by Margie Hines, while Bimbo's singing is done by Billy Murray.
The design of thee Talkartoons, and this one in particular, is primitive. This one might be mistaken for a Van Beuren cartoon, albeit one from about 1932.