Sisu concludes with Aatami Korpi surviving his harrowing journey through the Finnish wilderness while evading Nazi pursuers during World War II. Despite losing his wife and child, and sustaining severe injuries, Aatami’s unrelenting sisu – his inner determination and courage – carries him through near impossible odds until finally reaching safety after traveling over 400 miles alone. The ending sees him recovering in a hospital and solemnly visiting his family’s grave, before envisioning his late wife and daughter with angels’ wings to signify their spirits living on. Though scarred by profound tragedy, Aatami retains his humanity and integrity. The finale underscores the incredible power of sisu in the face of adversity, and how Aatami’s endurance and resolve prevailed even in the darkest circumstances. His exhausted but defiant proclamation of “Sisu” in the closing scene encapsulates his grueling odyssey and the indefatigable Finnish spirit that guided him through it. Despite the Aatami emerges bloodied but unbroken, his inner light still shining. The ending pays tribute to extraordinary courage and resilience, and how even in our bleakest moments, sisu can help us survive and carry on.