A previously pampered society mouse must fight his way back to the comforts of Kensington after he is sent spiraling into an underground world filled with scavenger rats and villainous toads in a fun-filled family adventure produced by DreamWorks Animation and Aardman Features and featuring the voices of Hugh Jackman, Kate Winslet, Ian McKellen, and Jean Reno. Roddy (Jackman) was living the high life when he first met Sid the sewer rat (Shane Richie), but that's all about to change when Sid decides to send the hapless mouse down the pipes and stealthily take his place in the lap of luxury. Though the bustling sewer city of Ratropolis isn't without its fair share of kind citizens, it is certainly no place for a pampered mouse with a taste for life's finer things. Upon making the acquaintance of scavenger rat Rita (Winslet), Roddy is certain that the pair can navigate their way back to the surface in Rita's trusty boat, the Jammy Dodger, but Rita's help doesn't come cheap, and the nefarious Toad (McKellen) is determined to rid Ratropolis of all things rodent. When Toad's hapless hench-rats Spike (Andy Serkis) and Whitey (Bill Nighy) fail to achieve acceptable results, the green meanie is forced to call in the cavalry in the form of legendary French mercenary Le Frog (Reno) to get the job done.