For many centuries, witches supported the climate, but now the atmosphere is breaking down, storms are growing stronger, and witches can barely keep up. All hope rests on the Supreme Witch, who is born once every generation and whose magic is connected to all seasons. Her name is Clara. And in autumn Clara realizes she doesn’t want to control her power. Wild and changeable, she’s needed for managing the weather, but the cost— the death of loved ones—is too high. In winter, the world is on the brink of catastrophe. Fires flare, storms rage, and Clara understands: only she can change something. In spring, Clara falls in love with Sun, her mentor. Her magic will grow stronger, as will her feelings. In summer, Clara will have to choose between her power and happiness, between duty and loved ones—before she loses Sun, her magic, and plunges the world into chaos.