When someone takes aim at Rhonda Rhino, FunJungle’s pregnant (and endangered) Asian greater one-horned rhinoceros, the zoo steps up security measures in order to protect this rare animal and her baby. But the extra security isn’t enough—someone is still getting too close for comfort. Teddy and company start to suspect that whoever is after Rhonda is really after her horn, which is worth a lot of money on the black market. For the first time ever, the head of the zoo enlists Teddy for help—for once, he doesn’t have to sneak around in order to investigate—and the results are even more wacky, and even more dangerous, than ever before.