The film follows the thoughts and advice of a man, a psychologist was sent to the space station to study a mysterious region of space named Solaris Ocean.

• Solaris
• Natalya Bondarchuk
• Donatas Banionis
• Jüri Järvet
• Vladislav Dvorzhetsky
• Nikolai Grinko
• Anatoly Solonitsyn
• Andrei Tarkovsky