On an ordinary night in 2015, the purple word "explosion" suddenly appeared on the electronic screens in the streets and alleys of Taiwan, and on the large screens on the exterior walls of buildings. This is the "purple exposure" that has been popular in online forums - a grand event that occurs when more than 90% of the people in the forum are concentrated on one page. The police intervened in the investigation and initially determined that it was a commercial crime committed by a newspaper reporter Lan Yiqing (played by Guo Xuefu) and a well-known online hacker King (played by Chen Bolin). But Lan Yiqing told the police that all this originated from a hacker war on BBS, Taiwan's largest online forum. In a hacker war many years ago, only two hackers, King and Mimic (played by Xiu Jiekai), were left. Mimic desperately attacked King's computer, but King won in just one second. Mimic has always been brooding over this, and he used his hacker skills to carefully plan a war on the BBS forum. King was "made" to be the initiator of this chaos, and was suspected of revenge for his ex-girlfriend Xiang (played by Chen Yihan). While everyone's attention was focused on the BBS, Xiang in the real world was suffering from a fatal disease and the double pressure of netizens' human flesh searches. The overwhelming insults and the calls from unrecognizable numbers brought Xiang to the brink of collapse. In order to clear his name and save his beloved girl, King officially declared war on Mimic...