Authorities enforce customs, quarantine, immigration and finance laws in Australia.

A man is caught in a lie when officers find incriminating evidence on his phone; a student faces a penalty for importing sausages; a smuggling operation is attempted.

A passenger claims to have come to Australia on holiday, but his story doesn't quite add up; forgotten takeaway food becomes a serious problem; a box of chocolates causes trouble.

Agents delve into the lives of a family that seems to be hiding something; a wedding guest attracts the attention of agent Josh; another passenger tries to cut a deal with customs officials.

An influencer is caught with narcotics in their luggage; detector dogs are drawn towards a Chinese student; a shipping container seems to be carrying something along with corn oil.