This book tells the story of A Mu, who struggles to survive in a barren desert with a child. After unexpectedly discovering Heartguard Flowers, which can purify the environment, he and his companions establish a settlement. They cultivate the land beside the flower fields, fend off attacks from sand bandits, and gradually build a home where everyone helps one another.
Starfall Village is raided by sand bandits wearing bronze masks. Its villagers flee to the settlement with their last seeds of Starwheat, revealing the secret alliance between the bandits and the lord's manor in Blackrock City. A Mu and the others use resources like Heartguard Flowers and Starwheat, along with their ingenuity, to drive off the bandits. They also join forces with the righteous people of Blackrock City to foil the conspiracy.
At last, people from different settlements come together in spring to hold a sowing festival, scattering all kinds of seeds across the land as a symbol of hope enduring in the desert. With seeds as its central thread, the story portrays people protecting their homes in desperate circumstances, finding the courage to help one another, and longing for the future.