Complex territorial issues addressed by the independent organisation monitoring the thin dotted line between the EU and the UK. The Patrollers carry out a suspiciously lengthy strip-search on a smuggler, dispose of some controlled explosives with a controlled explosion, and suffer some contentious fallout from a visit to a Mexican restaurant. Meanwhile, the 'virtual border' gets a real grilling from a BBC reporter. Comic mockumentary following the SBP, the visible presence ensuring the border remains invisible.