Nakmor Drack: Clutch Moment
Drack's final vignette, and arguably the worst pun in the Heleus Cluster. After completing Firebreathing Thresher Maws of Doom, return to the Tempest to read your mail, then zip right back to the Nexus to respond to Drack's e-vite.
Go back to the Only Residential Area in the Entire Nexus, and open the objective'd door for a brief cutscene.
This incident raises a number of questions, none of which will be answered. Just roll with it to complete Drack's final character mission.