Dek (Rhys Ifans) is a gentle giant with two passions in his life: his souped up Ford Sierra 'Baby' and his girlfriend Shirley (Shirley Henderson). But while supporting her friend Carol (Kathy Burke) on a TV chat show Shirley is stunned when Dek walks on to propose live on air! As Dek is left to contemplate his future with Shirley in Nottingham Shirley's rogue ex-boyfriend has been watching in Glasgow and decides it's time to reclaim his woman. Heading south (swiftly followed by the gang he's just conned) Jimmy (Robert Carlyle) gets ready for an emotional and physical showdown with Dek and Shirley... little knowing that his daughter Marlene is also up for a fight!