Sam's got a new friend. An ENORMOUS new friend. Warning: There's a pterodactyl in this book. No, really. Okay, it started out as an egg. But then it hatched. And out came a pterodactyl! Which was actually quite cool in the beginning. But then it got bigger. And bigger. And BIGGER. And of course Mom found out about it. But that wasn't even the worst part. The worst part was, a group of scientists led by the evil genius Dr POX came looking for it. And the very worst part was that the pterodactyl was not even toilet-trained. Boy, are Sam and Priya in trouble now!