A girl is riding on a white horse that is in an enclosed obstacle course, but it's just walking, trotting and running around the perimeter doing laps. Another girl is now the focus and she's riding on a taller brown horse who begins walking, trotting and they also stay on the perimeter of the area.  When the brown horse is done going around in laps, it walks over to the white horse who is now in the middle of the area and it stops.