When Jack discovers that someone in Briddvale is taking pot shots at local pets with a pellet gun, he is determined that The Twitchers will get to the bottom of it. But The Twitchers are more interested in the news that a rare and endangered bearded vulture has been spotted heading for Aves Wood. Determined to prove himself a detective, Jack sets off to investigate, only to find himself in deep water... Friendless and alone, Jack must use all his bravery and detective skills to not only stop a terrible crime, one that could put the bearded vulture in danger, but to prove to his friends that he's a deserving member of The Twitchers.