A short hop from Lyon, France to Brittany in 1998 is extended when pilots of Proteus Airlines Flight 706 decide to give passengers a bird's-eye view of a legendary French ocean liner nearby. Suddenly, the commuter plane explodes in midair and spirals into Quiberon Bay, tragically ending 15 lives. Despite hundreds of eyewitnesses, no one seems to know what brought down the twin-engine Beechcraft. Follow the unimaginable chain of events that led to this crash and discover its impact on innovations in airline safety.