Three young historians set out to prove the New World was settled by mariners who came from Africa on rafts. However, they not only travel across the ocean, but also to the past, landing among the ancient Aztecs. Fleeing them, they dive over a waterfall and end up back in the present, but with evidence of their time travels.
In the 17th century, Geoffrey Marshall idly thinks he'd sell his soul for courage. Later he accepts a charm from a stranger, who guarantees it will bring him the courage he seeks. It does, but eventually the Devil returns for his soul. In the current day, Bud Harper suffers from the same lack of courage until he comes across that same satanic charm. However, this time when the Devil comes to collect, Bud has developed real courage and tosses Satan out on his ear, reminding the demon that he never made any agreement for his soul.