Katya and Andrey arrive in Malta on the eve of their wedding and they coincidentally encounter Max in a diving center, a scuba diver and Katya's former fiancé.

During one of the dives, Katya finds a fragment of a life jacket with the number of a German submarine from the time of the Second World War.

After investigating, the guys find out that in 1942, members of the SS stole ancient Egyptian relics from the Maltese Order of Hospitallers, which should have been delivered to Germany.

Katya, Andrei and Max become immersed in the quest for treasure and a love triangle develops between them.

[2] During one scene Khabensky's gas cylinder was not filled with air which caused the actor to almost drown.