Destiny 2's first expansion launches on consoles on December 5, Activision said today at Sony's press conference at Paris Games Week.

Curse of Osiris is set on Mercury, and tasks players with solving a new mystery.

"The Vex are on the march, and our only hope to stop them may lie with Osiris, the notorious heretic and most powerful Warlock in the history of the Last City," said Activision.

"On your quest to find him, you’ll meet new characters, explore new places, tackle new challenges, and earn some sweet new loot."

Osiris is the chap behind the "Trials of Osiris" competitive multiplayer mode in the original game.