Odessa, August 1970. The heat wave. The city is overrun with tourists. Boris, an international journalist, arrives from Moscow with Valerik, his eight-year-old son, at the home of his stepfather, Grigori Iossefovitch and his stepmother, Raïssa Irovna Davydova. The day of her arrival Odessa is quarantined because of a cholera epidemic. The city is closed. This is how the son-in-law, who came for two days, finds himself plunged into a world transformed by a serious danger. Family secrets are revealed, incredible events will happen as well as a forbidden love.