“Sisu,” directed by Jalmari Helander and released in 2023, is an action-packed film set in the final days of World War II in northern Finland. The story centers on Aatami Korpi, a former soldier turned prospector, who discovers a cache of gold in the desolate Lapland wilderness. As Aatami attempts to transport his newfound wealth to the city, he encounters a retreating Nazi battalion led by the ruthless SS officer Bruno Helldorf.