When Ben Silverstein is sent to the rundown town of Buttonville to spend the summer with his grandfather, he's certain it will be the most boring vacation ever. That is, until his grandfather's cat brings home what looks like . . . a baby dragon? Amazed, Ben enlists the help of Pearl Petal, a local girl with an eye for adventure. They take the wounded dragon to the only veterinarian's office in town -- Dr. Woo's Worm Hospital. But as Ben and Pearl discover once they are inside, Dr. Woo's isn't a worm hospital at all -- it's actually a secret hospital for imaginary creatures. After Ben accidentally leaves the hospital's front door unlocked, a rather large, rather stinky, and very hairy beast escapes into Buttonville. Ben and Pearl are tasked with retrieving the runaway creature, and what started out as an ordinary summer becomes the story of a lifetime. Suzanne Selfors delivers a wild journey filled with mythical creatures and zany adventures that are anything but imaginary.

Pearl doesn't mean to be a troublemaker. Trouble just seems to find her. Pearl Petal and Ben Silverstein can't wait for their first official day as apprentices of Dr. Woo, veterinarian for imaginary creatures. That is, until they are tasked with clipping the sasquatch's toenails. Gross! Then Pearl spots a monster in the lake behind the hospital. Even though they were told not to leave the building for any reason, Pearl sets off for a closer look, with Ben trailing cautiously behind. The outing goes awry when Ben is captured by the creature and held hostage on an island in the middle of the lake. It's up to Pearl to hatch a rescue mission. Will she save the day or cement her reputation as the town troublemaker? And will the hospital's secret patient be able to help? Suzanne Selfors takes readers on an incredible adventure full of mythical creatures and astonishing discoveries that are anything but imaginary.