Kentaro Saeki, a young man portrayed by Haruma Miura, repeatedly fails his bar exam and finds himself at a loss for direction. His sister, Keiko, works as a freelance writer. Together, they embark on a quest to uncover details about their grandfather, Kyuzo Miyabe, played by Junichi Okada, who perished while serving in the special forces during World War II. Despite his fear of death and strong desire to live, Kyuzo Miyabe’s decision to join the special forces remains a mystery. His former navy comrades describe him as both a brilliant strategist and a coward. As Kentaro and Keiko delve deeper, they unearth a startling secret that has remained hidden for six decades.