Anya and Valera’s marriage was a happy one. They met in their early youth and were certain that they had become one of those rare couples in love whose feelings remain strong forever. Life took them through different cities and military garrisons, and they raised two children. But after 17 years, their idyll falls apart. Valera leaves his military career for a more profitable and settled occupation. He moves the family to a large city, where he meets another woman. Anya learns about his mistress at her husband’s birthday party.