In a world made entirely from cardboard, the citizens of Cardboard City face titanic calamity on a daily basis. Giant robots wreak havoc, meteors threaten to obliterate everything and everyone and evil superpowered villains strive to take control of the city. Fortunately, the Cardboard City Fire department is on the case. Grumpy Chief Murphy McCard, tenacious Deputy Betsy Brough and bumbling Intern Double Lucky Dave do their best to save the city they love, and through no fault of their own, they tend to succeed.