Synopsis
The culmination of several adventures leading up to that point, The Faction War brought an end to the factions' control of the city. Instigated by the power-hungry Duke Rowan Darkwood, factol of the Fated, in a bid to dethrone the Lady of Pain and rule Sigil himself, the war spread throughout the city before the Lady of Pain, with the aid of a group of adventurers (the players' characters), intervened.
Read more about this topic: Faction War