Resort sex

The main character comes to a seaside resort and gets acquainted on the first day with his mother and daughter, with Alla and Vika. His daughter is a little younger, Mom a little older. The hero tries to flirt with Vika, but on the last night before his departure he starts a stormy affair with Alla. Relations are tied directly into the sea, at night. And the connection between them appears so strong that they meet exactly one year later at the same resort.