A twelve-year-old boy who transformed into a rat at birth seeks to undo his family's curse at their abandoned estate where he forms an unlikely friendship with a girl who loathes rodents.

The beginning -- Ratty arrives -- Edweena Gup -- Rat poetry -- Jasper Gup -- Barclay manor -- One rat means trouble -- The trap thief -- The survey -- The lonely lecture -- Furry guests -- The Barclay curse -- Night walk -- Gracious Gup -- The creepy graveyard -- The invasion begins -- Talk of the town -- Edweena's dire warning -- The counselor's office -- Rat welcome mat -- Caught in a trap -- Edweena smells a rat -- Time to give up -- Destiny calls -- Rat-catching time -- An unexpected conversation -- The news ain't good -- Sinkhole, the sequel -- The great rat rescue -- Michael Barclay -- Full circle -- Best birthday ever.