Twelve-year-old Yolanda "Yoly" Ciceron toils with her sister Camila on a strawberry farm outside the city of Silo, which is a beacon of hope in a world ravaged by climate change. Her dreams of living there one day are shattered when her sister lets her know they can no longer afford the school's tuition. Desperate, Yoly accepts a scholarship from the mayor that requires her to put her life in danger on a mission to a weather-ravaged area. Yoly uncovers further unsavory secrets about Silo and works with Camila to bring autonomy to the outlying areas by saving the last remaining beehive.