The Canadian icebreaker Amundsen pushes north for a 14-day mission carrying scientists into the Arctic Circle. The crew retrieves equipment left behind the previous year and drills ice cores that will feed future climate research, work that has to happen on a tight window before conditions turn. The film follows daily life aboard a working research icebreaker: navigating shifting ice, deploying instruments over the side in sub-zero wind, and the logistics of running a floating lab thousands of kilometers from the nearest port. Scientists explain what they are measuring and why the Arctic's changing ice matters beyond the region itself, while crew members describe the physical toll and occasional danger of the work, including the film's nod to how quickly the environment can turn from routine to hazardous. It is less a single dramatic story than a record of a specific voyage, showing the unglamorous mechanics behind the data that ends up in climate reports.