Deliveryman Lin Tian encounters A Yin, a dragon girl who has lost her memory, and unexpectedly awakens a system that allows him to grow stronger through his extraordinary physique. To protect A Yin and earn a living, he ventures into the jade industry, repeatedly resolving crises caused by street thugs and underground forces, and meets Su Qingxue, Su Wan, and others. He accepts an invitation to cooperate with the authorities, using his abilities to overcome various dangers. Constantly pushing beyond his limits, he safely protects those around him and preserves their ordinary, warm life.