Counting White Stones

In a seaside town of Scotland,  many fishermen disappear into the ocean.  To spare their widows the agony of wondering if they will ever return, there is a way to make an ancient pact with the Sea for answers.

However, one day the roles are reversed and a fisherman's wife disappears, leaving behind her small son. Time is running out and the man is afraid he will never see his wife again. But then something strange washes ashore.