Bibi, Tina, and Alex are looking forward to the Falkenstein endurance race, and plan to enter as a team. Then Elisabeth, whose mother is a friend of the Count's, pays them a surprise visit. She wants to compete in the race too, but she can't ride alone. She decides to win Alexander for herself instead. Will she succeed?

Count Falko is visited by Prince von Zoffenberg, an important client of his. Bibi and Tina accidently frighten him twice with their rambunctious riding. This prompts Count Falko to complain to Mrs. Martin, who forbids the girls from riding. But then the Prince unexpectedly needs Bibi and Tina's help - which means they've got to ride!

Martin's Farm is expecting two new kids for the summer break: Mark, who's quite the daredevil, and his rather shy brother Toby. Bibi and Tina are supposed to take care of the boys, but it turns out to be more exhausting than herding cats! And then Mark gets a really foolish idea and suddenly ends up in a trap!

Bibi and Tina win a spa weekend at a luxury hotel for Mrs. Martin. Tina's mother is hesitant to accept, but she decides she really could use some time off. Bibi, Tina, and Roger can take care of Martin's Farm while she's away.

Bibi and Tina are disappointed: The Martins Farm's birthday is supposed to be canceled this year! Tina's mother simply doesn't have time to prepare the party, and she doesn't trust the two girls to do it alone. But Bibi and Tina don't give up that easily. They are secretly planning a surprise party! Unfortunately something goes wrong.

This summer is really hot, everyone is short tempered. When Bibi, Tina, Alex and Freddy find an old treasure map, they get into an argument about it. Because the boys want to look for the treasure on their own. But Bibi and Tina won't put up with that. A race for the treasure begins: boys against girls. Which team will win?

Bibi, Tina, and Alex have become enthusiastic members of Falkenstein's volunteer youth fire brigade. The forester, Mr. Greenfinch, teaches them how to put out fires and conduct search and rescue. Unfortunately Count Falko has other plans for his son and spoils the whole thing for everyone. What was fun suddenly gets serious!

Bibi and Tina are given the chance to do an internship with Falkenstein's vet, Dr. Robert Squirrel. Things go well at first, but then the girls begin to slack off and the vet sends them back home. But when he finds himself in a tight spot, the girls want to prove that they can be helpful after all. Will they be able to?

Bibi and Tina buy a birthday present for Mrs. Martin at Junkshop Jack's: a necklace with a horseshoe pendant. But when she wears it, Count Falko notices that it resembles his grandmother's heirloom. And indeed, this very heirloom is missing from the castle! Could Junkshop Jack be a thief? Bibi and Tina don't believe it!

Bibi and Tina travel to England with Alexander and his father Count Falkenstein to visit the Lady Bedlam's stud farm. They're invited to the McIntosh Junior Gallop race, in which a team from the farm is supposed to be competing. But they don't show up, and suddenly Bibi and Tina are at the starting line with the local boy Tom!

Mrs. Martin is using her grandmother's old recipe book to bake gingerbread cookies shaped like horses. Bibi and Tina take them to the Falkenstein Christmas Market, where they sell fast. But then someone breaks into the stall at night and steals all the merchandise. Bibi and Tina think they might know who the culprit is.

Bibi, Tina, and Alex are in Hungary visiting Szendrö Manor to celebrate the birthday of Mikosh's horse Baboshko, but they're unable to get into a festive mood. It's winter, and there's a wolf roaming about looking for food. When the locals get ready to hunt down the poor creature, the friends are horrified, and they try to help him.