Eleanor's boring summer vacation turns exciting when a magical pony from another world arrives and enlists her help in locating his runaway twin sister.

Although she is sad that she has to give up the pony she has outgrown, Steph is soon distracted from her own problem when she meets Comet, a magical pony who needs her help to find his twin sister.

"Preeti Namesh is snowed in, so she thinks it's going to be the most boring vacation ever, until magical pony Comet shows up"--