The System in Ye Luoli's Elf Dream Is Too Confusing

On the first day of traveling through Ye Luoli, the system issued a mission: to prevent Wang Mo from obtaining Fairy Luoli. I:? Isn't this the dismantling of the protagonist group? But the reward is so delicious - [Plot Tampering Card]. From then on, I embarked on the path of crazily changing the plot: saving the characters who were supposed to be darkened, exposing Mandola's conspiracy in advance, and eliminating the original abuse points one by one. But after changing things, the plot began to get out of control, and the system seemed to have anticipated everything.