Bibi and Tina

The two friends prepare a scavenger hunt. But when Bibi lays the trail of sawdust to the quarry, Tina gets angry: Nobody has any business there, it's Alex's and her secret meeting place! Shortly after, Tina is nowhere to be found. Where can she be?

Bibi and Tina are really looking forward to the Halloween party at the youth club. But Alex declines. His father leaves unexpectedly and he has to both look after the castle and his cousin. The children simply decide to celebrate all together in the castle. Suddenly, a spooky headless knight appears!

Bibi and Tina don't like this new vet in her "fine" white coat. Apparently she doesn't know anything about animals, otherwise the foundling dog wouldn't have grabbed her arm. When she orders a muzzle, Bibi and Tina are really angry. But then the two are amazed: the new Vet is a superb rider!

Cowboys, western riding and the wide prairie - Bibi and Tina are thrilled when they receive an invitation to Horsehead Ranch in North America. The girls befriend a Native American named Lucy, and her grandfather, who breeds majestic Appaloosa horses. In a struggle to remain on their family’s ancestral land, Lucy and her grandfather are faced with a dodgy businessman’s plans to take it over. Bibi and Tina decide to help their new friends, unaware of the danger that awaits them.

In the middle of the night, a ghostly cloaked horseman races across the Martins Farm. Ms. Martin is upset because the holiday children are scared. Due to a silly misunderstanding, she thinks Bibi and Tina are the culprits. Will the two friends manage to unmask the "real" ghost?

Bibi and Tina are horrified: Ringmaster Rondelli wants to take his pony Snoopy to the butcher because it can't jump high enough anymore. The two friends want to save Snoopy. But how? When Bibi entertains the circus audience with her witchcraft, she actually gets the pony as a gift. But, can Ringmaster Rondelli be trusted?

After a heavy storm, help is needed at Falkenstein Castle. Bibi and Tina take the carriage ponies Max and Moritz there to pull away fallen trees. But during the cleanup, the ponies suddenly disappear. Have they escaped or is this the work of a horse thief? Bibi, Tina and Alex have a suspicion!

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?

The holidays will soon be over and Bibi has to go back to Newtown. But it's so beautiful at the Martins Farm that she would like to stay there forever. Her parents are very sad about what their daughter writes to them in a letter, so they decide to visit her. But then Bibi suddenly disappears!