Brightheart, a charismatic firefly who serves as the village hero, is challenged by a robot named Aurora. Heartwarming action and hilarity ensue, in a magical and vividly-hued pastoral landscape, as both parties embark on an evenly matched battle for dominance.

Tucker and Hamid are going to be grandfathers for the first time, but only if they can come together long enough to save their first-born grandchild.