He was once a genius in the culinary world, but due to a conspiracy, he lost his sense of taste and became a delivery boy traveling through the city night. Until the delivery AI in his phone suddenly woke up. This artificial intelligence named "Xiaomi" did not issue a doomsday mission. Instead, it planned an incredible route for him: one order every night, delivering meals to a specific, broken-hearted customer, and using his remaining cooking knowledge to solve a food-related knot. Under the precise calculation of AI, he cooked noodles for programmers who collapsed, recreated the taste in the memory of an old man who lost his only child, and made desserts for reconciliation for cold war lovers... He became the mysterious "Late Night Healer" in urban legends. When he gradually touches the real feeling of warmth in the process of healing others, the shadow of the past approaches again. Deep in the cold logic of AI, there is actually the last gentle instruction of a deceased relative: "Calculations show that saving others is the best solution to restart your life."