Bibi and Tina are thrilled! Finally, it's time for another summer at Szendrö Ranch. But where is Bibi's friend Mikosch? After a quarrel with his elder, Janosch, young Mikosch runs off to join the infamous Csikós, a nomadic group of Hungarian horse herders. One thing is certain for Bibi and Tina: They absolutely must find him! When the two friends track him down in the vast plains, they learn that life in the wilderness hasn't been easy: Two of the Csikós have been arrested on suspicion of poaching. Determined to help, the three riders set off on an adventurous mission to prove their innocence.