It's fair to say that "Roddy" the rat has been spoilt rotten by his wealthy Kensington family so he's totally ill-prepared for the arrival up the drainpipe of "Sid". He's a bit rougher and wilier round the edges and so encourages his host to take that special jacuzzi down into the sewers where he is swiftly completely out of his depth. "Ratropolis" turns out, though, not to be as daunting a place as he initially thought and after a shaky start he manages to ally himself with the no-nonsense "Rita" and her boat the "Jammie Dodger" as she fends of the nefarious "Toad" who requires a red ruby…