Caution! This book may lead to kids crow cawing and stink facing around your home or library. Other side effects may include vulture hissing, laughing out loud, and increased interest in nature.Callie's fiendish training has Copper the house cat questioning whether she made the right decision to join the special wildlife squad known as the FLOCC, and that's before Copper hears that her friend, Bart the barred owl, is missing. When Riley the tree frog arrives to ask for Copper's help once again, she wonders if she truly has what it takes to be a useful member of the FLOCC. But there's no time for doubts when a friend is in need. Copper will have to put all of Callie's survival training to the test as she joins familiar friends and curious new critters on a journey that takes them to a mysterious place known only as The Tree, where something isn't quite right for the opossums who live there.Will Copper and the gang be able to solve the mystery of the opossum apocalypse? And most importantly, just how disgusting will Copper's fur get this time?