The Three Golden Keys

A man in a hot-air ballon is thrown off course in a violent storm, landing him in the city of his youth. He finds the way to his old home, but the house is dark, with three rusty padlocks on the door. A black cat with eyes of fire appears and leads him through Prague's silent streets and monuments in seach of the three golden keys that will open the door of his boyhood home and restore the city to life.