It's a summer heatwave and Polly's attempt to cool off ends up freezing her whole house -- and her family. To keep her family in their frozen states while Shani works on a cure, Polly and Lila take them into an ice cream truck. But keeping the ice cream truck driver at bay will require some extreme tiny skills and a visit from the "ice cream inspector" -- Lila in disguise. When frozen Paxton is mistaken for an ice pop, Polly must chase down and retrieve her frozen baby brother for imminent icy doom. In the end, Polly learns that listening to her dad can help her avoid air conditioning catastrophes.