The Circus Connection

The English architect, together with his daughter Susan, comes to a horse stud run by a friend. A little Englishwoman meets a girl and a boy there, and they spend time together in the nearby forests. The boy persuades everyone that he has seen tarpans in these forests, but because no one believes him, he invites Susan to go search with him. The circus, belonging to an eccentric American, buys horses at the stud. The invited children realize that one of the trainers and the vet are hiding a secret. During an accidental balloon flight over the old fort, they see tarpans and circus containers. In this way, the children discover wild animal smugglers who use the circus as a veil for their evil deeds. Now the little heroes just have to get out of the fort as quickly as possible to notify the police before the circus goes with the animals to America.