The first piece of story DLC for Assassin’s Creed Unity is out next week, Ubisoft has announced.

Dead Kings takes place after the events of Unity, and follows Arno to Saint Denis, a mysterious city that holds the crypts of deceased French kings.

Sent on a mission to the extensive underground of the Basilica, Arno will face a faction of new foes, the Raiders, populating its catacombs. Equipped with a lantern and a new powerful weapon, the Guillotine gun, Arno will have to navigate the dangerous passageways to uncover the darkest secrets of the city.

Dead Kings also offers new open world activities and side missions, including new Murder Mysteries, enigmas, and cooperative missions.

Ubisoft announced in November that Dead Kings would be free to make up for Unity’s buggy launch.

It will be available on Xbox One and Windows PC on January 14, and PlayStation 4 on January 15.