Maglir has a bad habit of defaulting on contracts, because he believes he isn't paid enough to put his life on the line and he worries about his family. He defaults two contracts during the Hero of Kvatch's time in the Fighter's Guild before finally defecting permanently to work with the Blackwood Company.
Vilena Donton sends the Hero to Modryn Oreyn, in Chorrol, who then tells them that a rather undependable Guildmate named Maglir has defaulted on a contract to recover a journal from a mine infested with undead. They are to locate Maglir and find out why he hasn't returned to Chorrol.
At the end of the quest just before the Hero leaves the Blackwood Company Hall, Maglir attacks, being one of the last Blackwood members left alive.
- It is curious that Maglir says that he needs the money for his family, as when the Hero completes "Den of Thieves" with him, he says: "It's tavern time!"