Steph is sad to give up the pony she's been riding since she was a little girl, but she's outgrown him. Before long, Steph meets magical pony Comet, and suddenly she's not so lonely anymore.
Marcie desperately wants a pony of her own, but it doesn't look like that's going to happen. Until she discovers magical pony Comet in her backyard, that is! Marcie and Comet have lots of fun while helping each other.