When you click on it, the dialogue is "Followers of Baa and a band of cutpurses have been raiding Mist from the islands to the north. They come to Mist through a teleporter on the northwest of the island. I'll activate the teleporter so that you can get to their islands and get rid of them. I'm sure they have all the things they've stolen on those islands, and you can get back from their teleporter."
So although there is no "Come back and see me when you've done it" in the dialogue, it is explicitly labelled as a quest, and the implied reward is their treasure.