Customs put Operation Bread to the test to see how the recently trained cash detecting dogs fare, and an oversized package from South Africa must be checked for endangered species.

Caught at the border, a drug smuggler with a large package of the drug P; a fish smuggler with dripping wet pockets; and an unemployed woman's money making scheme goes wrong.

A Tongan man who arrives from the US with a large quantity of undeclared perfume bottles runs into trouble over Intellectual property rights.

Customs cash dog Roxy pulls aside a tour group who she detects are carrying large sums of cash; and some Aussie promo girls arrive in Queenstown with containers full of unidentified white powders.

Large hauls of high risk foodstuffs are located on regatta of Tall Ships at Opua wharf, and cash dog Roxy strikes again.

A Brazilian man caught at the border with drugs in his undies, illegal weapons are stopped at both the airport and the mail centre, and containers of Formula One cars need to pass biosecurity checks.

A Chinese tourist expounds her views on New Zealand after being caught bringing in a biosecurity threat, and 18 race horses are unloaded on the Tarmac and checked for equine viruses.