Spoiled brat Constanze Elsässer is thrown off by the expensive horse Dakota her father bought, which she took for a ride against wise manage staff advice. She even ignores Nelly(s urging to spare her wounded leg and leave the search to adults, until the pain becomes unbearable. With Dr. Philip Hansen and Annette away tending to sick grandma, the girls bicker over domestic chores, neighbor Josephine Grieshaber cooks well but can't control them.

Initially Philip Hansen plays down the threat of hornets nesting in his attic, but the super-wasps soon penetrate the house and surgery when prodded by two enterprising but bumbling schoolboys, Gustav the nerd and dumbo Dominic, who promise to suck up the scary bugs 'cheaper then the fire department', which arrives late as fire chief Vinzenz Grieshaber insists on written permission from the ministry to remove the protected species due to heath hazard, which doc gets fast. Bertie is late, having failed his theoretic test preoccupied with the far move of his beloved ...

Brilliant nerd Gustav Ott has joined a school for the super-gifted and prepared a video magic show as humorous goodbye. Pawel needs a new buddy and teams up with adventurous dumbo Dominik. After the class visit to an expensive theme park was switched for a local walk even Pawel's family can afford, the new cahoots drift off and liberate a buzzard from a poacher's poisoned rabbit trap. They dream of training him, hidden in the old castle ruins, which even have a suitable cage, but realize the game will soon be up as they were followed and found by nosy girls, who alert...

Widower organ builder Stiller is greatly attached to his caged parakeets, but they bred too numerous, so he gets doc Hansen's advice to find a new home for some. Pawel and the girls volunteer to find takers through the school. Collecting some cages, they stumble across a family picture of Stiller with classmate Jessie Nagel's mother Isa, and reunite them with the long-estranged (grand)father.

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