Speak to Ikora Rey

Speak to Ikora Rey in the Hall of Guardians at the Tower.
"The Tower is run by a group called the Vanguard. You'll report to Ikora, the Warlock representative. She's…very learned. Said to run a spy network called the Hidden. In any case, it's best to listen to her." —Ghost
Added In
The Taken King (2015.09.09)