Isa is rather shy and she can’t think up any witty and clever things to say. This changes in a flash when one morning the wild Zorra lands on her school desk. Black eye mask, cape and hat: Zorra looks just like her brother Zorro, whom everybody knows – while unfortunately nobody knows her! And she is the complete opposite of Isa: self-confident, combative and quick-witted. The problem is: nobody except Isa can see Zorra. However, this proves to be a true stroke of luck, because on the next school trip Zorra helps to get Isa out of trouble more than once. And in the process, Isa even manages to rescue the whole class… After all, heroes do not always wear a black cape.