A crisis with his grandson arises, a 50-year-old ex-bull rider decides to ride again despite strained relations with his strong-willed daughter. Confronting his demons, he considers the greatest sacrifice for family.
Near future. Mankind is successfully exploring space: now a huge Delta station is located in the earth's orbit. Maksim Bortnikov is one of the members of the station repair team. An unexpected catastrophe caused by a proton storm cuts off Maksim from the rest, and he is left alone in outer space.