In 1810, Napoleon invaded Spain, and the town land was occupied. Spain was helpless and defeated again and again. During its retreat, it secretly dropped a cannon into the valley, which was exactly what Britain and France were eager to get. Britain sent Captain Anthony to Spain to approach the transfer of giant guns, but the troops had long been withdrawn. When they encountered guerrillas against the French, rebel leaders Michel discussed with Anthony. Anthony repaired the cannons and taught the rebels to use them until the city of Avila was captured and then transferred to Britain. Anthony agreed: sure enough, in the Battle of Avila, the cannons used powerful firepower to destroy the walls, the rebels captured Avila, and Anthony completed the task. Send the giant cannon back to England!