In his quest for truth and answers concerning the suspicious death of his son and his family, retired career soldier, Jesse Hunter, finds himself in a sedate retirement village in New Zealand's South Island where he reunites with a former Special Air Services buddy. After making friends with some of the village's retirees, who themselves have past military backgrounds, they find out that a young man who visits them regularly has a mysterious and out-of-character disappearance. Are Jesse's son and the young man's demise somehow connected? As suspicions are also raised about the integrity of the local police, the 'boys' decided to take matters into their own hands with a little bit of homegrown detective work. Their investigations take them from a peaceful retirement and a life of fun and humour into a world of intrigue, danger, kidnappings, Russian mobsters, murder, a biker gang and a terrorist cell group. Who can they trust? As they all draw on their past wartime experiences, they realise they can only trust each other and embark on rescue missions using their old age smarts and unconventional weapons to take on the bad guys. There is humour, action and drama as The Whiskey Tango Foxtrot Squad have one last battle to fight.