When Su Wan was complaining about a novel called "A Fake Daughter Should Be Abused for 365 Days, Then Transform into a Black Person and Reveal His True Self", he accidentally traveled into the world of the novel. She was dissatisfied with the bloody plot in the novel, especially the plot where the fake daughter was being abused all the time and was unable to fight back.
While Su Wan was complaining, an entity called the "Face Slapping System" was bound to her body. System number 001, calling herself Xiao Yi, told Su Wan that her mission was to travel through various novels full of flaws and slap those characters and plots in the face that made people's blood pressure soar.
The system will record the moment when Su Wan is slapped in the face and edit it into a short play for readers who have complained about it. Based on the readers' ratings, Su Wan will receive corresponding rewards. After accumulating to a certain level, she can return to the real world with the rewards.