One day, Zhang San woke up and discovered that he was in someone else's body.
He was abused from the start, then lucked into a System. He thought it would be nothing more than a trip to another world, but there were far more twists and turns than he expected. Only after the fact did he realize he had entered a novel, and that its plot would have a powerful hold on him.
In the book, his original body was cannon fodder, a stepping stone to someone else's success, and a living organ bank for a mysterious person.
To survive, Zhang San had no choice but to fight back: take down his scumbag brother, torment his scumbag father, find the mysterious person, and break free of the plot's influence…
(The author is terrible at writing blurbs. If you want to know more, just read the book.)