From the rail yards of Spokane to the cold English countryside, this episode follows Charles "Chuck" Gumm Jr., a Rogers High kid turned P-51 pilot, whose ordinary upbringing met an extraordinary moment in midair. Against the roar of engines and the pressure of war, one failing Merlin engine forced a decision that would ripple across an ocean.

This episode shares a moment in history that never made the books, but it made a difference.