Kirill and Lisa have been married for many years — they are the most ordinary couple with a child and household chores. At one point, the marriage collapses when Cyril finds correspondence with Lisa's friend, stating that his wife has never experienced an orgasm in her life. To save the relationship, Kirill and Lisa, on the advice of a sex coach, and concurrently this very friend, Kristina are trying to diversify their intimate lives. Trying to achieve Lisa's orgasm, the couple increasingly discovers that the problem is much deeper.