You don't have to fail the arc, you have to not finish it so you can do the mission again, and again, and again, and again...
F
--
Pinky: "Gee Brain, but what if the Dragon eats us?"
Brain: "That would alter our plans...."
F
--
Pinky: "Gee Brain, but what if the Dragon eats us?"
Brain: "That would alter our plans...."