The focus of the story is on a happy young couple, Anna and Mikhail. The lovers are planning to get married and are full of bright hopes for the future. It has been about six months since Anna helped her future husband keep his job as an international airline pilot after a serious injury. Anna indulges in the joys of wedding preparations, unaware that soon Mikhail's former lover will turn not only her life, but also the lives of her loved ones, into a real nightmare.