Liverpool cop 'Sav' Rocksavage looks after his invalid father and is unsuccessfully trying to see his daughter by a recently returned girlfriend Cassie. Whilst off duty with colleague Andy Sav steps in to save waitress Amy being bullied by thuggish Noel Finch. Finch threatens him and soon afterwards the two young cops are lured to a house where Andy is set upon by Finch and his gang and dies. Later Sav returns to the house and shoots Finch dead before joining in the murder investigation.