In the tense 72 hours before D-Day, and the fate of the free world hanging in the balance, General Dwight D. Eisenhower and Captain James Stagg face an impossible choice—launch the largest and most dangerous seaborne invasion in history or risk losing the war altogether.

George Hardy is a shepherd who reads detective novels to his beloved sheep every night, assuming they can't possibly understand. But when a mysterious incident disrupts life on the farm, the sheep realize they must become the detectives. As they follow the clues and investigate human suspects, they prove that even sheep can be brilliant crime-solvers.