'Hey Arnold! The Jungle Movie' Trailer Is More Adventurous Than You Might Expect

Nickelodeon has unveiled the first trailer for Hey Arnold! The Jungle Movie. While it's definitely a nice boost of nostalgia, despite noticeable updates to the voice cast and animation style, the trailer falls into the all-too-common trap of giving away far, far too much of the story. Keep that in mind before taking the plunge. Co-written and executive produced by the TV series' original creator Craig Bartlett, Hey Arnold!: The Jungle Movie will answer the question of what happened to Arnold's p...