Rain is in labour, and Spirit is lying beside her. She is a bit in pain, but don't worry, she will be okay.
In nature, in the universe of wild horses, the pregnant mares who are about to give birth, leave the herd and look for a place where they can birth their foals. Using this idea, I imagined a scene in which Rain, here pregnant, leaves the herd and goes in a place where she can bring her foal into the world. Worried, Spirit goes after her, leaving the herd in the care of his mother, Esperanza, and finds Rain in a meadow, in labour. The action of this picture takes place at night, in the moonlight.
Spirit, Rain (c) DreamWorks