Most adventures in traditional TTRPGs start out the same way: Something bad happens and your players have to muster their courage to stand against it. Whether it’s rescuing the little dog that was kidnapped by the local troll, stopping an assassination attempt at the archduke’s wedding or recruiting an army to disrupt the construction of a world-ending ritual site, the party will always find a way to save the day. After all, what kind of heroes would they be if they let the dog, duke or entire population die? Saving the day is fun, but it starts to get repetitive after a while. If you’re using a “bad guys try to do stuff, good guys try to stop them” engine to drive all your sessions, you’re taking all the agency out of your players’ hands. Bad stuff happens, good people have to try to stop it, roll, rinse, repeat.