After the retreat of Imperial troops from the icy world of Cressida, a squad of Valhalla warriors led by the indomitable Colonel Stanislav Steele embarks on a rescue expedition in search of an important Imperial dignitary who needs to be evacuated from the planet to a safe place. But Cressida is infested with occupying forces of Chaos, bent on exterminating the local inhabitants. And this would still be tolerable, but very soon the mission of Stanislav and his fighters turns into a race for survival - because at the same time, an imperial warship in the upper atmosphere is preparing for a viral bombardment of Cressida, which will destroy all life on the planet.