Thowra helps Arrow escape from the Brolga after Arrow tries to get the fillies to join his herd. Thowra and Boon Boon find Yooralla, an orphaned brumby.
Thowra and Boon Boon teach Yooralla how to live in the high country. The Emus want to learn how to fly. Boon Boon is captured by a rancher and taken down to the plains.
While Thowra is looking for a secret hiding place where they can all go in times of danger, Mrs Dingo loses Warri, one of her pups. When they find him, they discover a secret valley hidden in the mist.
Charlie ventures into the high country on his own to visit his grandfather but gets lost and becomes stranded when his horse runs off. Benni, Thowra and the emus help rescue Charlie when he gets stranded on a ledge.
Charlie and his grandfather help free Yooralla when he becomes lost in a storm and gets trapped under a fallen tree. Thowra challenges the Brolga to keep him from adding Yooralla to his herd.
Arrow takes pride in being the first to announce the return of the trappers to the high country. Currawong and Mopoke get caught in one of the traps but Arrow can't free them and the Brolga refuses to help.
The Brolga chases Arrow away from his daughters again. Yooralla is reunited with his sister, Goonda. Yooralla is destined to lead his father's herd but will be allowed to stay in the high country for now.
Arrow seeks advice on whether to go south with Goonda. Goonda heads home after saying goodbye to Thowra and Boon Boon, and Arrow, who overslept, must chase after her to catch up.
The Man has brought Golden back up from the plains and after she hears about Thowra's supposed death, she escapes to go into the high country to look for him.
