Because of a violent summer storm, a traveling horse circus show arrives at Gut Kaltenbach. Ari is magically drawn to the world of horse riding, but she also sees the downsides because circus life is difficult for the horses. That's why she wants to help the old show horse Hurricane with the circus boy Carlo and with Whisper's help. When the fanatical ringmaster reveals their plan, Whisper is in danger. Then Mika finally returns from Canada.