2014 год. Now Susan,' Mother said, 'And you too, John. No night sailing. No going outside the harbour. And back the day after tomorrow. Promise.'But promises can't always be kept. Within twenty-four hours John, Susan, Titty and Roger find themselves fighting a night gale in the treacherous waters of the North Sea, adrift and in the main shipping lanes. Suddenly, it's real adventure and only their sailing skills can help them now.