American mining exec arrives in isolated Cornwall to lookat a possible mining investment to reopen an old tin mine. He is travelin with his young daughter (aged about 12) who he is supposed to be taking on holiday from her divorced mother but work has interveened.

A young boy l(also about 12) iving in the village sees them arrive and goes to meet his dad and brother, Dan, who have been out crab fishing. Next day Dan is starting a job at the mine which might be reopening. 

The the exec is having a meeting at the hotel an old man turns up and warns him that no good will come of the mine as it is owned by the devil..The girloverhears this.

Meanwhile the boy has an encounter with a ghostly boy on the cliffs in the sea mist, the ghost utters some mysterious words and eads him to the churchyard where a gravestone tells us that he died in the mine 100 years earlier. 

Next day the boy's mother, who  works at the hotel, tells the boy who is at a loose end, to show the girl around the village. Somewhat reuctantly they start to hang out together.

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