When academic Nadia is disowned by her puritanical mother and dumped by her lover, she decides to make a getaway - accepting a UN job in Iraq. Tasked with rehabilitating ISIS women, Nadia becomes mired in the opaque world of international aid, surrounded by bumbling colleagues. But then Nadia meets Sara, a precocious and sweary East Londoner who joined ISIS at just 15, and she is struck by how similar their stories are. Both from a Muslim background, both feisty and opinionated, with a shared love of Dairy Milk and rude pick-up lines, Sara and Nadia immediately connect and a powerful friendship forms. When Sara confesses a secret, Nadia is forced to make a difficult choice.