The story begins at the Time Office in the South China Sea. The protagonist, Bobo, uses time travel to seek justice for those who have no way to turn to him in reality. The novel is composed of independent stories at the beginning, and then it is strung together into a whole story line. Starting from punishing quacks, the mission escalates step by step and develops into preventing the collapse of the universe's timeline! In the process of maintaining peace in the universe, the protagonist also experiences the darkest moments of losing humanity. The protagonist also experiences emotional undercurrents and struggles for justice, which makes you think about the ethical dilemma behind time travel.