World War II is raging across Europe and the German army has their sights set on England. Messenger pigeon Francis carries important notes back and forth between England and her allies, and wants nothing more than to do his part for the war effort. But when Francis is injured on an assignment to deliver the most important message of the war--one which warns of a coming attack on Britain itself--he finds himself stranded in the middle of the London Zoo with no way to complete his mission.
