Fearless aviator Donald Daring, "The Flying Fool," is late for church and misses his own wedding. In her absence, her godfather, Jack Bryan, leaves with her fiancé, Wanda, and a diamond necklace stolen from her family. Bryan takes Wanda and the stolen gems aboard his yacht and races out into the open sea. Donald is Wanda's last hope for rescue. Undaunted, he catches his plane and goes in pursuit!