Pegasus and the Flame of Olympus: Pegasus #1 by Kate O'HearnAdolescent Fantasy
You must completely suspend belief to read this. The plot is unbelievable; the characters aren't realistic at all; and, the dialogue is stilted and false. Yet, slowly, I started to enjoy it. By the last page, I thought I'd give #2 in the series a try. Maybe.
Emily's life isn't great to begin with. Her mother passed away two years ago and her father is largely absent. It goes from bad to worse when a winged horse crashes onto her roof in New York City during a thunderstorm. (A warning here: beware of violent plot shifts like this!) For some reason, the horse (Pegasus) trusts Emily and she enlists the help of a surly classmate (Joe) to save the horse with large amounts of breakfast cereal. Pegasus is fleeing because Olympus has fallen. Don't get excited--Channing Tatum will not make an appearance! Instead, a group called the Nirads have attacked the Greek stronghold and are looking for the winged wonder. Pegasus was unable to save Olympus because a petty thief (Paelen) stole his magical harness. Now Pegasus needs to retrieve it; the goddess Diana is PO'ed; and, Paelen has been captured by some FBI/Greek God type of group.
Rick Riordan doesn't need to worry. It's not a female Percy Jackson. It's a series that doesn't end on the last page, if you care to keep reading after that strange, but accurate, summary. It was just a little to fantastical for me to be too keen on it. Still, the character of Emily is likable and you just can't help rooting for her.