Police are on high alert when a lorry driver claims he has a gun.

When a massive storm causes chaos, a tugboat must rescue a ferry in distress. And the police find some suspicious-looking pigeons.

It's the start of the school holidays and a worldwide IT outage threatens the port's entire operation. The team race to bring in the largest cruise ship of the season and police intercept a driver who's high at the wheel

It's the busiest day of the year for Dover's cruise terminal, with three ships docking at once. The maintenance team go to work at the world-famous white cliffs, and the police stop a man who's wanted on immigration offences.