Local Hero (1983)

"A BEAUTIFUL COASTLINE... A RICH OIL MAN WANTS TO DEVELOP IT. A POOR BEACH BUM WANTS TO LIVE ON IT. AN ENTIRE TOWN WANTS TO PROFIT BY IT. AND A REAL-LIVE MERMAID WANTS TO SAVE IT... ONLY ONE OF THEM WILL GET THEIR WAY."

An American oil company sends a man to Scotland to buy up an entire village where they want to build a refinery. But things don't go as expected.