As the first work in China with the theme of network security, the drama takes Internet information security as the entry point, focusing on social hot spots and livelihood topics such as marriage, education, elderly care, and workplace. The whole story tells the story of the "Three Musketeers" Qin Huai (played by Tan Jianci), Zhou You (played by Rong Zishan), and Chen Mo (played by He Lei) who roam the online world. Although they have different personalities, they all uphold the original intention of "technology for good". The three of them join forces to fight against a certain Internet illegal gang again and again, and they go from suspicion to mutual trust.