Delivery boy Li Mo awakens to a strange system and discovers that his lifespan can be directly exchanged for martial arts cultivation and magical secrets. From then on, he worked hard to make a living by delivering food while crazily exchanging his life for strength. In the context of a modern city, he became involved in an unknown world of martial arts and extraordinary worlds. Others rely on talent to practice, but he becomes stronger by burning his life. In order to survive and protect everything he cherishes, he must be faster and stronger, deliver every "special" takeout order and defeat all powerful enemies before his lifespan runs out. This is an urban martial arts legend about time, life and power.