Stu's stag do in South America goes bad when Greg collapses at customs and is found to be full of cocaine. Arrested, the group are taken to an island prison run by cocaine-smuggling siblings, Selma and Branco. Things go from very bad to much worse.
A gang of Brits hit South America to celebrate Stu's 'last week of freedom'. But when one of them keels over at the airport, that last week of freedom part becomes all too true. In prison, one question burns bright: Do you know who your friends are?