Start with Rollins suddenly being paranoid. He's convinced someone is stalking him. The public will file this as Ambrose and will not give it much attention. A couple of week pass and this gets built up until Rollins is found unconscious and beated up by some mysterious guy, he's now in keyfabe coma.
The Authority is weirded out by this, and it get worse when its other members start getting stalked and beated down too. One after one they fall, even stephanie. No one is safe, Triple H start having lot of extra security in the backstage, and frantically trying to understand who's doing this, but it's no use. All the members apart from Triple H get taken down.
Close a minor PPV with the whole staff searching for Triple H, no one finds him. The announcer put over that "there's no one left to book next raw".
Next Raw comes. The arena's lights are dim. The announcers sum up last ppv and put over again how they're not sure what will happen tonight because there's no one to book the show. Lights go dark.
Sting appears in the middle of the ring with Triple H tied up and beaten up. Sting promo that "puts Triple H on trial" for his authority meddling, and then heavily beat him up with the baseball bat, announcing that "the king is dead" and there's a new sheriff in town.
Sting new GM, we can then have it fight Triple H at some point for control of the company if we can see old people punch each other, but more importantly Sting GM which is quite good.