Preschool animation - Full Episode in English. Heroes of the City is a television cartoon about rescue vehicles in a small town where everybody gets to be a hero. About the episode: One foggy morning, the mail doesn’t arrive. The inhabitants of the city wait patiently, but no mail can be seen. In the end, it is Percy Post himself who calls the emergency services. Cindy Seaplane has disappeared, and with her the day’s mail delivery. What might have happened to Cindy Seaplane. Has she gotten lost in the fog. The Heroes of the City come to the rescue!.