Modern programmer Liu Wenqing dies from overwork, time-travels to ancient times to become a poor stepmother, and unexpectedly reunites with her biological son who also time-traveled and has suffered greatly. Relying on her self-developed space-time trading system, she protects four children, steadily gathers mountain goods, develops businesses, and drives the villagers to increase their income. She invites a teacher to enlighten her children, breaks old concepts to let daughters read and learn characters, and the family works diligently and upwardly, resolves various neighborhood disputes, strives with wisdom and hands step-by-step to improve their lives, and rushes toward a secure and happy new life.