How many mysteries does the history of two ancient noble families from the north of England hold? What connects them - love or crime, friendship or betrayal? What is not customary to mention here - and what must be completely silent? How do the secrets of the past influence the fate of representatives of the new generation, who for the first time in many years have gathered near the ice-covered lake separating their estates? The young woman tries again and again to find answers to these questions , not yet realizing that some secrets would be better off never coming to the surface...