In the town of Blithe Hollow, Norman Babcock is a boy who can speak to the dead, but no one besides his eccentric new friend, Neil, believes his ability is real. One day, Norman's estranged eccentric uncle tells him of an important annual ritual he must take up to protect the town from a curse cast by a witch it condemned centuries ago. Eventually, Norman decides to cooperate, but things don't go according to plan. Now, a magic storm of the witch threatens Blithe Hollow as the accursed dead...

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

The tale of three unlikely heroes - a misfit mouse who prefers reading books to eating them, an unhappy rat who schemes to leave the darkness of the dungeon, and a bumbling servant girl with cauliflower ears - whose fates are intertwined with that of the castle's princess.