The twins Hanni (Laila Meinecke) and Nanni (Rosa Meinecke) find it more than uncool the idea of spending the rest of the school year at the boarding school instead of at home in Berlin. But their mother Susanne (Jessica Schwarz) remains steadfast: she herself is on the road, and when Hannis and Nannis father Charlie (Sascha Vollmer) has to take care of the twins alone, only chaos comes ensues.
So the two girls end up in the boarding school Lindenhof. The twins decide to put up as much nonsense as possible so they can fly back from school during the probationary period. But then Nanni finds new friends among the riding schoolmates and a task in the horse Pegasus, while Hanni continues to work on her sacking. For the first time in their lives the twins go separate ways.
When Hanni meets the grumpy Godehard (Henry Hübchen) with his dog Lochness in the forest, she does not realize that in Godehard's house the key to a secret is hidden, which can save the Lindenhof from the threatened sale ... Will the twins reconnect? And can they save the boarding school?
