A young man Kentaro Saeki (Haruma Miura) keeps failing his bar test and does not know what to do any more. His older sister Keiko is a freelance writer. Kentaro and Keiko begin to search for information on their grandfather Kyuzo Miyabe (Junichi Okada) who dead in the special forces during World War II. Their grandfather Kyuzo Miyabe was terrified of death and obsessed with life. Why did he join the special forces? According to his fellow navy soldiers, Kyuzo Miyabe was a genius and also a coward. Kentaro and Keiko then discovers the shocking truth which has been sealed for 60 years.
The story of Saeki Kentaro, who continues to fail the National Bar Examinations and lose sight of the goal of his life, and his old sister Keiko, who is a freelance writer looking up their grandfather Miyabe who died in the Pacific War as a Kamikaze pilot. Miyabe had an astute ability as a pilot of fighter planes, but he was extraordinarily afraid of death. His two grandchildren started wondering why he applied for the Kamikaze corps. Revealing Miyabe’s unexpected title of “genius yet coward”, they unveil a surprising fact which has been sealed for over 60 years.