After a violent storm, a dense cloud of mist envelops a small Maine town, trapping artist David Drayton and his five-year-old son in a local grocery store with other people. They soon discover that the mist conceals deadly horrors that threaten their lives, and worse, their sanity.

Biographer Margaret Lea travels to the isolated rural mansion of the famous writer Vida Winter, who asks her to write her biography. Although initially she is reluctant, as Vida is known for constantly distorting the facts of her life, Margaret soon becomes fascinated with the story of a dark childhood, a disturbing tale that leads her to finally confront the traumas of her own past.

Odessa, August 1970. A heat wave. The city is full of tourists. Boris, a journalist and foreign affairs specialist, and his eight-year-old son Valeri arrive from Moscow to visit Boris’ in-laws, Grigori Iosifovich and Raisa Irovna Davidov. But on the day of their arrival, Odessa declares a quarantine due to a cholera outbreak, and the city is closed off. Having come for a few days, the son-in-law is plunged into a world changed by serious danger. Family secrets will be disclosed, improbable events happen, and a great forbidden love starts.

Contemporary Russia. Nadya gives up her dream of becoming a champion figure skater when she is hospitalized with an injury. But then she meets Sasha, a hockey player, who decides to teach her to believe in herself and her dream again.