Sgt Midgley tries to qualify as a dog handler after 24 years on the force but 14-month-old springer spaniel Ruby puts both their futures in jeopardy. The Greater Manchester Police dog squad remembers a close call with football fans during the 2008 Uefa Cup Final, and the 55-strong team deals with a siege involving a man with a knife, who is threatening to kill his family. Narrated by Ken Stott.