A dinosaur loose in Gravity Falls snatches up Mabel's pig, Waddles, leading the Pines family on a prehistoric journey to get him back.
A prehistoric beast snatches Waddles after Grunkle Stan throws him outside and it's up to Dipper, Mabel, Stan, Soos, and Old Man McGucket to go after the beast in order to save Waddles. Meanwhile, Dipper and Soos work out their friendship issues.—A