Officers Judy Hopps and Nick Wilde are still fighting to be taken seriously as detectives - a struggle that gets worse when their off-the-books smuggling probe turns into a public disaster. With Chief Bogo threatening to split them up, the pair chase one last lead: a mysterious snake seen near the crime scene. That trail leads them to Gary DeSnake, a pit viper fugitive obsessed with exposing a secret behind the city's climate-controlling weather walls. When Judy and Nick realize he's telling the truth, they're suddenly framed by the powerful Lynxley family, whose buried crimes drove Zootopia's reptiles underground - and whose new plans are far more sinister. Branded fugitives, Judy and Nick join forces with eccentric beaver conspiracy buff Nibbles Maplestick to track down Gary and uncover the city's founding injustice - a case that will test their partnership, upend everything they thought they knew about Zootopia, and turn friends and enemies upside-down.