Farah is a young lawyer living and working in London. She's just ended a long relationship, and her parents are looking for a husband - whether Farah wants one or not. So far, so normal. But at a work dinner, hosted by a dangerously powerful man, she comes across a young woman called Razia, who Farah soon realises is being kept as a domestic slave. We follow Farah's daring investigations from the law courts of London to the brick kilns of Lahore, as she begins to uncover the traps that keep generation after generation enslaved. Everywhere she turns there is deep-rooted oppression and corruption, and when the authorities finally intervene, their actions have dire consequences. Farah teams up with a human rights lawyer, Ali, and the two become close - but can she trust him; can they help Razia and others like her; and will they ever discover the explosive secret behind these tragic events?