P.C. Tony Stamp arrives at Hendon Police College to check on the progress of new recruit P.C. Luke Ashton, who will soon be posted to Sun Hill provided he can pass the course. Ashton's confidence takes a dive when he is subjected to bullying by fellow recruit Pete Warner, and with it, his scores for the course. On a night out at the pub, Ashton saves Warner from a bashing by drunken youths, but it's still touch and go. It comes down to his final test, and his new-found confidence sees him through. Meanwhile, back at Sun Hill, the officers compete over the cushy task of ""puppywalking"" the new recruit, but P.C. Reg Hollis has a plan...