Animal lover Mabel (voice of Piper Curda) seizes an opportunity to use a new technology to 'hop' her consciousness into a life-like robotic beaver and communicate directly with animals. As she uncovers mysteries in the animal world beyond anything she could have imagined, Mabel befriends charismatic beaver King George (voice of Bobby Moynihan) and must rally the entire animal kingdom to face a major, imminent human-threat: smooth-talking local mayor Jerry Generazzo (voice of Jon Hamm