Destiny 2’s Wayfinder’s Voyage is a questline running throughout Season of the Lost.
Similar to Path of the Splicer during Season of the Splicer, this introduces a long-term plan to the season’s new activities and features, with each week tasking you with using the Wayfinder’s Compass, collecting Parallax Trajectory, and more.
From the first step onwards, this quest grants access to the Astral Alignment seasonal activity, as well as an entry to the Shattered Realm.