The team search for a young boy who goes missing after discovering his mother is having an affair with a family friend, who is later seriously injured in a road accident. Meanwhile, Younger strikes up a friendship with a bullied young boy when he fills in for the lollipop lady, Gina and Bellamy set Rob up on a date with a hairdresser, but the date doesn't go according to plan after Rob realises he still hasn't grieved for his late wife, Miller is outraged when a nits investigation grips the Ashfordly station, Carol is delighted when her fiancé gets leave from the Navy and visits her, whilst Peggy and David experience a slight cash flow problem.

The constabulary are called to subdue anti-war protesters at a disused airfield, but the event has serious repercussions for Rob when one of the protesters accuses him of police brutality, whilst Miller is horrified when he discovers the "victim" is the boyfriend of his estranged daughter Jo and finds himself forced to arrest his own child. Meanwhile, Younger is gutted to when Rosie begins a new romance with new vet Fergus, who is the indirect cause of chaos when a snake escapes from his car at the garage. Irritated that nobody's taking her snake-catching suggestions seriously, Peggy refuses to help with the hunt and heads off with David for the day - straight into danger.