Rainbow Dash was living peacefully in Ponyville, when all of a sudden, she saw smoke coming from the Everfree Forest. She goes to investigate and is quickly captured by a brutal mafia-like organization led by Trixie. Although she is eventually rescued by Pinkie Pie who lives far away from Ponyville (at the time), Rainbow Dash never stops trying to get back home, along the way encountering good and bad experiences with the terrible ponies – and love with a beautiful mare; Rarity.
(Based on the movie: Spirit: Stallion of the Cimarron)