At Cork Airport's Passport and Immigration, Officers Noel Maxwell and James O'Hearne's are put on high alert when they get a hit on the Interpol Database for a woman who has just arrived from Spain. Officers from Dublin Police's traffic division are involved in a high-speed pursuit of a stolen vehicle before it can be shipped across the border. And officers have to deal with a potentially explosive incident near Dublin Airport.

Armed police in Cork hunt for illegal immigrants trying to get into Ireland and officers in Dublin deal with a brother and sister from Hong Kong who claim to be visiting a relative.