André, Pierre, Finot and Le Guen are cadets in the Fort Carré Military Academy of Antibes and they are the best friends in the world. One of them, André falls madly in love with Catherine, a charming orphan. But Catherine is kidnapped by bandits and when André comes to after being knocked out, she has disappeared. André reacts promptly and aided by his three inseparable friends, tracks down the bandits and frees Catherine. The two lovebirds marry and live happily ever after.