Sisu is a 2022 historical action thriller film written and directed by Jalmari Helander. A co-production between Finland and the United States, the film stars Jorma Tommila, Aksel Hennie, Jack Doolan, Mimosa Willamo and Onni Tommila. Set in Finnish Lapland during World War II, a former legendary Finnish commando and gold prospector attempts to secure his gold and defend himself from a Nazi death squad led by a brutal SS officer.Originally, Helander was supposed to work on the science fiction comedy Jerry and Ms. Universe as his next project after Big Game, but the COVID-19 pandemic changed Helander's plan and he moved on to make Sisu. The film was shot in 2021 near the Nuorgam village in Utsjoki, Lapland with a budget of about €6 million ($6.5 million). According to Helander, the 1982 film First Blood and the real-life Finnish military sniper Simo Häyhä, who fought against the Red Army, served as inspirations for the film.Sony Pictures Worldwide Acquisitions acquired the film's worldwide distribution rights outside Nordic countries and then decided to team with Lionsgate to release the film in North America.Sisu debuted at the Midnight Madness section of the Toronto International Film Festival on 9 September 2022. The film premiered in Finland on 27 January 2023 and was released in the United States on 28 April 2023, where it received positive reviews from critics.