It is Spring - Estrella and the first herd are desperately looking for grazing land so they can fatten up for their long trek over the “Mighties” (Rockie Mtns). Estrella believes their home lies beyond the Rockie Mountains, where the tiny horse used to roam thousands of years ago.
Tijo is traveling with the First Herd as he is no longer a part of his former clan, The Burnt River People.
The First Herd starts out with ten horses, one mule, Yazz, and Tijo.
Pego found a new home among the Burnt River Clan and his new master is the healer who is also the Chief as the previous chief has died.
El Miedo captured the people of the Burnt River Clan along with Pego and turned them into his slaves to help build his great capital city. El Miedo and his men were out hunting buffalo when their gunfire caused them to stampede. Estrella and the first herd were passing through the same plain where the buffalo were grazing and during the stampede, El Miedo, having spotted the First Herd, captured Estrella and Tijo and took them back to his camp where they were held prisoner.
Hope, First Angry’s offspring, approached the First Herd and they became friends. Originally Hope was going to go after the First Herd to avenge his father’s death but Grace, a mason bee, and Haru, in her omo owl spirit lodge, convinced Hope that he is nothing like his father and he gave up on getting revenge on the First Herd.
Haru changed her spirit lodge by moving from the omo owl into the body of Hope so she could better help Estrella and Tijo escape from the Iber’s camp. Estrella and Tijo’s first attempt to escape the Iber’s camp during an animal blessing failed.
To help Estrella and Tijo escape, Hope (and Haru in her spirit lodge) crept into the Iber’s camp unnoticed and went to see both Tijo and Estrella giving them each a piece of fool’s gold to trick El Miedo into thinking they knew where there was gold.
El Miedo and his men went looking for the gold along with Estrella and Tijo expecting them to show him where they found it. During their search for the gold, Abelinda, one of the horses who befriended Estrella while they were imprisoned in the Iber’s camp, created a distraction so Tijo could grab the knife of Abelinda’s rider and free himself and Estrella from the ropes that bound them to Iber’s moving party on their search for gold. When the other horses saw Estrella and Tijo escaping, they joined them bucking the Iber’s off their backs and running off with Estrella and Tijo to their freedom increasing the First Herd’s number to one hundred. During the escape, Pego gave his life to save Estrella and Tijo by jumping in the way of El Miedo’s musket fire. El Miedo had a musket in both hands and was heading for Estrella and Tijo but Pego sacrificed his own life for theirs getting hit with the musket fire.
The horses split up into four groups led by Estrella, Verdad, Abelinda, and Arriero to cross over the Rockies. Splitting up into smaller groups would make it easier to manage and safer as they crossed over the treacherous Rockies.
Angela had gotten a stone stuck in her hoof that Tijo was able to dislodge but not before the stone had caused damaged and her hoof worsened the further they went. A storm came up suddenly as the First Herd was crossing a river. Angela lost her footing as she was crossing the river and floated downstream away from the herd. Angela managed to swim ashore only to be eaten by a ravenous grizzly bear who was desperate to find food before hibernating for the winter.
THE ENDING
The horses finally reached their new home, “Valley of the Dawn”.
When they arrived they all saw the tiny horse approaching them with another spirit that resembled a young girl who was called First Girl. The Tiny horse represented the first horses to roam the earth and First Girl represented the humans that had roamed alongside them. Then something miraculous happened and Abelinda foaled giving birth on the soil of their new home to a filly she name Aurora (Rory).