Pete Postlethwaite (Brassed Off, In The Name of The Father) is Hubert Flynn, Dublin bread delivery man, who loves his pint of Guinness, his bet on the horses and his wife Conchita, in that order. So when he comes home from the pub one evening and changes into a RAT, Conchita is slow to forgive.

Conchita (played to perfection by Imelda Staunton - Shakespeare in Love, Peter's Friends), at first resists her family's eccentric plans for Hubert, but when an opportunist ghost-writer knocks on the door and proposes to put their story in a book and then a film of the book and a book of the film and riches beyond her dreams...she is tempted, so setting the stage for a series of bizarre and comical adventures for Hubert the rat and his family.

RAT is the tale of family values, little furry folk and one man's struggle to regain his humanity...literally!