A motley crew of convicts sets out to find the ancient treasure of Tumacacori, which has been hidden in an old frontier town for centuries. But their run-in with the sinister town sheriff and his sidekick deputies only deepens the mystery of why no one's visited the village in more than 400 years. If the convicts can unravel the secrets the town's been keeping, they'll find their way to fortune -- and an unbelievable explanation.