Crimson Twilight opens in Old Barovia with the Kolyana death and Ireena’s sanctuary petition. The party’s core arc is escorting Ireena to Zaleskiy Gorod (CT02, Cathedral of First Light), recovering the three Prophecy relics, and confronting Strahd at Castle Ravenloft.

Fixed lunar events anchor the timeline: Umbra full on 2026-07-16 (in-world 3462, CT02 vigil trigger). Night of Four Moons projected 2029-01-01 (in-world 3465).