A power outage disrupted the lives of three ordinary people. The optimistic young man Zhou Gangkang (played by Zhou Jialuo), the frustrated female screenwriter Li Xiangwen (played by Jiang Jiamin), and the hot-tempered Zheng Zhong (played by Zheng Zicheng) all became deliverymen to make a living. The three of them have their own ambitions, but they are in trouble because of a power outage. Just when the road ahead is uncertain, the three of them learned that there is a magical light bulb in the world. As long as the light bulb is lit, the wish will come true! However, the light bulb only has one chance to realize its dream, and one of the three must sacrifice...