Cunards Queen Victoria, target-rich in counter-terrorism terms, approaches the Port of Los Angeles and Port Police sweep the docks, surrounding area and the ship for explosives and other potential threats. When a tip comes in about a missing college student in a national case, the Port Police dive team exhaustively search a local marina for her body. Customs and Border Patrol investigates a suspicious Panamanian container for narcotics, weapons and explosives. As Captain Rubino and his Maritime Academy cadet son climb the treacherous Jacobs Ladder to board the mega ship, Rubino weighs the risksthe dangerous task took four lives last year. Truck driver Sal Orosco worries that the dirty truck ban developed by Dr. Knatz may drive him out of the industry.