In 1999, Li Ran, reborn from the future, is dumped by his fiancée, Lin Xiaoya, at their engagement banquet for spending 100,000 yuan on domain names. He is also humiliated by Sun Yutao, a nouveau riche businessman who made his fortune selling pagers. Unfazed, Li Ran builds an internet operation in a basement and uses his precise foresight to sell valuable domain names to foreign investors for millions in legitimate foreign currency. He establishes Spark Technology, providing free support to small and medium-sized businesses entering cross-border e-commerce. After thwarting Sun Yutao's malicious retaliation and illegal cyberattacks, he donates the core domain names of more than seventy countries for free, earning national protection and support. Ten years later, Spark Technology has become a trillion-yuan technology giant, and Li Ran stands at the pinnacle of his era, while those who once mocked him have fallen into obscurity.