The Adventures of the Black Stallion - Season 1 Episode 6 Vigil

Alec learns the meaning of tolerance and friendship when Mike, a boy with Down Syndrome befriends him. At first Alec doesn't know how to treat Mike but with the help of Henry, he becomes friends with him. Mike is Alec's only hope when the Black gets spooked and throws Alec who hits his head. Mike must figure out how to wake up Alec and get past the Black who's faithfully guarding his friend. When Alec comes to, he realizes that Mike and his horse asked the Black to move after Mike took down the fence dividing them.