Equation with All Unknowns (2008)

In the late 90s, Yuri Samoylov and his wife Anna return to Moscow after a five-year business trip abroad. After a long separation, Anna happily meets with her friends: the wife of a diplomat Vera Kraft, and former fellow students Olga and Irina, whose lives are not going so smoothly. They dumbfoundedly look at the happy Samoylov family and their unearthly love, but, as it often happens, life suddenly makes a 180 degree turn - Yuri gets a severe head injury and after a long treatment becomes in fact a demented child. An absurd accident turns into hell: Anna is left alone with two children, without money, without work, with her disabled husband in her arms. Which friend will come to her aid at such a moment, forgetting about her problems? How will Anna's life develop further, will she be able to cure Yuri and regain love? You will learn everything from this complicated story about female friendship, trials, strength, love and betrayal.