The story follows the residents of Immenhof during a turbulent summer:

: Simultaneously, Emmie and her friend Susi secretly care for 22 Icelandic horses belonging to a neighbor who was also a victim of a poisoning attack.

Watch the official trailer to see Lou and Cagliostro's adventurous journey:

: After finding a suspicious boot tip near Cagliostro's stall, Lou realizes the horse is still in danger. When she learns Mallinckroth intends to race the stallion despite its condition, she flees with Cagliostro.

: Lou seeks refuge with her childhood friend Cal (Max Befort) and his semi-wild horses. She gives Cagliostro the "great promise" that he will never have to race again, though keeping that promise proves difficult.