Dragon Age 2 - The Way it Should Be is a side quest for Aveline, one of your key party members. This quest is only available if the player accepts it earlier on. The quest exposes corruption behind the Captain of the city guard, by finding his connection to a number of ambushes on various patrolling guards.

1. Go to the Sundermount Abmush site.
2. Fight through the small group of human enemies.
3. Once you're finished, leave the area by going to the exit nearby.
4. Head back to Viscount's Keep to speak with Aveline.
5. Go to Lowtown at night and follow the quest arrow. You will once again have to fight through a few waves of enemies, but this shouldn't be too difficult.
6. Head back to the Keep once you save the guard.