The events of Curse of Osiris take place on Mercury and follow the Guardian's efforts to rescue Osiris from the Vex in order to avert a dark future. The expansion's plot touches on the relationship between Osiris and his disciple, Ikora Rey.
The legendary figure of Osiris returns after years of exile, and makes contact with his former student, Ikora Rey. Osiris discovers the Vex from both past and future timelines are amassing on Mercury. Despite Ikora's reluctance to trust Osiris, she sends the Guardian to find him and determine whether he can be counted on as an ally in the fight.
The Vex have transformed an area on Mercury into the Infinite Forest, a virtual simulation of the universe where the Vex use as to bring their plans into reality. The forest is overseen by Panoptes, Infinite Mind.
- ↑ 1.0 1.1 destinygame (2017) YouTube: Destiny 2 - Expansion I: Curse of Osiris Reveal Trailer Retrieved October 30, 2017.