A pampered pet mouse is flushed down a toilet and ends up in a vast underground rat city in the sewers of London. He is befriended by a quick-witted rat who offers to help him find his way home, but first the hapless pair have to escape the clutches of an evil toad bent on ridding the rodent metropolis of its residents. Animated adventure, with the voices of Hugh Jackman, Kate Winslet, Ian McKellen, Shane Richie, Jean Reno and Bill Nighy.

London high-society mouse, Roddy is flushed down the toilet by Sid, a common sewer rat. Hang on for a madcap adventure deep in the sewer bowels of Ratropolis, where Roddy meets the resourceful Rita, the rodent-hating Toad and his faithful thugs, Spike and Whitey.