Rolling Kansas (2003)

Texas, 1984. Dick Murphy, the eldest of the Murphy brothers, is a man with nothing to lose. He is part owner of a miserably failing t-shirt shack and his marriage to the beautiful Becky is careening headlong into the toilet. This, combined with a distaste for the harassing mortgage lenders pounding on his door, has put Dick in a foul mood. One evening the Murphy brothers inadvertently discover something quite amazing: The Map. They are shocked to find that their long lost parents, the Hippies Murphy, have bequeathed to them a map to a mythical field of pot.