Ryder and the pups are called to Adventure City to stop Mayor Humdinger from turning the bustling metropolis into a state of chaos.
Following the events of the first film, Surly and his friends must stop Oakton City's mayor from destroying their home to make way for a dysfunctional amusement park.
Astronaut Scorch Supernova finds himself caught in a trap when he responds to an SOS from a notoriously dangerous alien planet.