Plot synopsis: Zhou Zhi Ping is a computer geek with an incredible talent for digital technology. He found freedom in the virtual online world and set up a "Zero" team to steal and sell secret information. After meeting Si Yun, he gradually let go of his distrust of others, but he did not expect that Si Yun, just like him, actually has her own secrets. Their feelings for each other changed due to the death of Zhi Ping's parents in the past, and even stood against each other.