Customs are faced with a challenge when they try to find out what a passenger with some unusual travel movements is concealing. Immigration officers try to find out the truth from workers who have a lot to hide during a factory compliance raid in Western Sydney. Two Canadian passengers wanting to have some fun and indulge in a little partying struggle to make it through Quarantine.

An angry Hong Kong banker tries to tell Customs officers how to do their job. The mother of a New Zealand passenger hoping to attend a family reunion makes a passionate plea to Immigration officers. Customs find some new methods of concealing drugs when they search some parcels from India.

Customs go on the hunt for drugs on two suspicious passengers from different flights from Vietnam. Immigration interview a British passenger who has declared a criminal record, while his girlfriend waits at the airport. Quarantine staff find an act of shocking cruelty in a parcel from China.

A joint effort between the Navy, Department of Fisheries and Customs intercepts an illegal fishing boat operating in the Arafura Sea, north of Darwin. Customs try to find out why a passenger from Japan is very nervous. Customs staff find an incredible concealment in a package.

In Sydney, a random bag search of two passengers returning to Australia turns nasty. Customs fight to stop a multi-million dollar black market trade in sharks off the north-western coast of Australia. Quarantine discover a dangerous threat in the luggage of some passengers from Lebanon.

When Customs find traces of narcotics on an American passenger's surfboard, the passenger pops some pills, becomes abusive and collapses. A stash of food in the bags of some Indonesian passengers holds a surprise for Customs. Customs officers find that 50 jars of pills in a package from India are not the natural remedies claimed on the jars.

When a British passenger makes an astonishing admission, Customs officers become very interested in him. A hunt for a Chinese woman suspected of being in Australia illegally sparks an angry showdown with Immigration. A passenger returning from Iran is stopped at the border.

A New Zealand passenger is not happy that he is separated from his wife and children after Immigration discover that he has a criminal history. An incredible situation in Customs could put a Vietnamese passenger's life in danger. Immigration compliance officers work with police and the Department of Transport in a crackdown targetting illegal taxi drivers in Sydney's southern suburbs.

Immigration face a huge security concern with a German passenger. Two funny looking Vietnamese passengers carry something that is deadly serious. The discovery of two packages from South Africa triggers a raid on a black market smuggling ring.