On Alkya, a planet a long way from Earth, the Division of Investigation--Other Worlds--has set up a base where hundreds of personnel live and work. Among them are two men, Major Joshua Marsden and Lieutenant Matthew Ronson, who are part of one of the survey teams.
Dropping through the atmosphere to land on Theta for their latest survey, the ship is disabled by a strange energy force and crashes in an immense ice field. Matt awakens in the debris of the control room to find Josh and Dennis injured and the ship badly damaged.
Matt does what he can for his colleagues and attempts to repair the tear to the ship's skin. But the men struggle to keep warm in the freezing temperatures, and when they discover their comm-unit isn't working, it becomes a fight for their very survival...