Roddy is a decidedly upper-crust "society mouse" who lives the life of a pampered pet in a posh Kensington flat. When a sewer rat named Sid comes out of the sink, he desides he had hit the jackpot. Roddy schemes to rid himself of Sid by luring him into the "whirlpool." Sid may be an ignorant slob, but he's no fool, but it is Roddy who winds up being flushed away into the bustling sewer world of Ratropolis. There Roddy meets Rita, an enterprising scavenger...

Sammy Sanders sets out to prove that a spaghetti-slurping serpent lives in his sewer.

Middle schoolers Timothy Murphy and Jessamyn Hazard careen downhill on a sailboat which was being towed through Manhattan and fall into the sewers, where they meet interesting characters before being caught by the evil "queen" of this underground society.

Looking for alligators in the sewers of New York City seems like a silly idea to Gabe Brown, but his brother is the creator of internet series, Discover Cryptids, so the filming crew sets out to explore the storm sewers--but when one of them panics, they get separated and lost.