The story begins with U.S. Marshal Carrie Stetko, who is stationed at a research base in Antarctica. Carrie is preparing to leave the continent after an incident in her past that led to her decision to work in such an isolated location.
As Carrie is about to depart, a dead body is discovered on the ice, leading her to launch an investigation into the murder. She teams up with United Nations investigator Robert Pryce to solve the case before a massive storm hits the area, making it impossible for anyone to leave.
Carrie and Pryce discover that the murder victim was a geologist who had recently made a significant discovery—an unusual meteorite containing evidence of diamonds. They suspect that the killer is after the valuable meteorite, leading them to believe that the murder was not a random act.
As Carrie delves deeper into the investigation, she uncovers a conspiracy involving diamond smuggling and past events that connect to her own troubled history. She also learns that she is being targeted by the killer, who is determined to eliminate anyone who stands in the way of their plans.
In a series of intense confrontations, Carrie narrowly escapes multiple attempts on her life while racing against time to unravel the truth. She eventually discovers that the killer is a rogue Russian operative named Anton Weiss, who is willing to kill anyone who gets in his way.
In the climactic showdown, Carrie confronts Weiss in a final showdown on the ice. After a brutal fight, Carrie manages to defeat Weiss and save herself from certain death. With the killer apprehended, Carrie can finally leave Antarctica and begin to put her troubled past behind her.
As the film ends, Carrie reflects on her experiences in Antarctica and the lessons she has learned about survival and redemption. She boards a plane, leaving the frozen continent behind and looking forward to a fresh start elsewhere.