Imogen Wise, a daring teenager, teeters on the precipice of adventure. Leaving behind the cosy confines of home, she embarks on a solo journey-a leap into the unknown. Meanwhile, her younger sister, Tilly, remains ensnared by the ordinary: friends, zoo animals, and the mundane rhythms of life.

But secrets fester beneath the surface. On their parents' anniversary, Imogen stumbles upon a revelation that shatters her world: her mother's affair with her own uncle. Loyalties fracture, and chaos descends upon the family. Each member hurtles down divergent paths, their destinies irrevocably altered.

Then, catastrophe strikes-a cataclysm that plunges the northern hemisphere into darkness. The sun retreats, civilization crumbles, and humanity grapples with primal fear. As the world unravels, Imogen and her companions traverse a desolate landscape, confronting terror and uncertainty at every turn.

In this dystopian saga, resilience becomes paramount. Imogen, Tilly, and a cast of unforgettable characters must forge new alliances, rediscover lost strengths, and navigate the treacherous terrain of a transformed Earth. Amidst the ruins, they seek not only survival but also purpose-a place where hope flickers like a distant star against the blackened sky.