Transmigrated into Ye Luoli, This System Is Such a Rip-Off

On my first day after transmigrating into Ye Luoli, the System gives me a mission: stop Wang Mo from obtaining the fairy Luo Li. Me: ? Isn't that breaking up the protagonist's team? But the reward is just too tempting: a [Plot Alteration Card]. From then on, I embark on a wild journey of rewriting the story: saving characters who were supposed to fall into darkness, exposing Mandola's schemes ahead of time, and snuffing out every tragic plot point from the original. But the more I change, the more the plot spirals out of control, and the System seems to have seen it all coming.