"One perfectly normal afternoon, Kelsey Case is nearly trampled by a runaway zorse (half-zebra, half horse!), which just so happens to belong to Becca Morales, one of the most popular girls at school. And that's not even the weirdest thing that happened that day! After the near disaster, the two girls cut down an alley where Kelsey hears strange cries coming from a dumpster. With a little help from geeky genius Leo Polanski, the group discovers an...