This game of war

"When 12-year-old Teddy makes a plan to sneak away from the Remembrance Day ceremony, little does he know where his scheme will take him! Teddy really doesn't want to go to the boring Remembrance Day ceremony, especially when the comics store is hosting the biggest War Games competition that has ever come to town on the very same day. But the day before the competition an old veteran gives him a "special" poppy that transports him to the trenches...