Mark, a successful St. Petersburg restaurateur, lives in a whirlwind of bright events and social adventures: parties, tastings, noisy companies, beautiful girlfriends and funny friends with their infatuations, romances and infidelities. But one day Mark will have to make a choice: a world of fleeting desires and thrills, or a feeling that happens only once. And it stays forever.

In November, at the very beginning of the terrible winter of 1941, when the blockade ring closes around Leningrad, a group of young iceboat athletes goes out onto the thin, not yet formed ice. The mission to deliver ammunition turns into an operation to save orphans from an orphanage who were not evacuated in time. Former rivals in regatta sports must now turn into a real united team in order to survive themselves and give hope to everyone else.