A pair of children befriend an eccentric old man, who lives isolated on the far shore of their island home. But it turns out that the old man knows a terrible secret about the island and the whales who sometimes come. Meanwhile WWI is making life hard in the village.

Man of leisure Sir Richard (Edward Petherbridge) receives notification that his Uncle has died, bequeathing him his stately country manor and all its lands. On his return to England he immediately sets about taking stock of all legal matters concerning his new property, but during these dealings Sir Richard seems to be more than a little distracted, he hears strange noises from the ash tree outside his bedroom window.