Mike Standish is a young man living on a farm at the base of New Zealand's Southern Alps. One morning he goes for a day tramp utilising a railway tunnel near the farm. Somewhere in the darkness he his knocked unconscious. When he awakes he finds that he has been kidnapped. He is taken to a hidden valley deep in the mountains, but finds that he is not the only captive. He soon discovers that they have also kidnapped a girl. Together they plan their escape, and soon fall in love. Nineteen days later he wakes up in hospital, and is told he had been buried in a rock fall; alone. What ensues is a battle between his mind, his heart and his psychiatrist who believes that the whole experience has been an illusion that he created to survive the trauma of his accident. But is it?