In the near future, Britain has fallen into environmental catastrophe and despotism. Floods have devastated the landscape, and The Authority governs with an oppressive hand, particularly over women who are forced to wear contraceptive implants. Yearning for autonomy and purpose, a woman known only as 'Sister' breaks free from her stifling existence and joins a radical commune of women in the Lake District. At Carhullan, she embarks on a transformative journey, shaping her identity as a rebel fighter. As Sister embraces the harsh realities of rebellion, she must confront the cost of freedom and the complex nature of resistance in an unforgiving dystopian world.