From the introduction:
“The Heart of Erenland” is an adventure set in the world of Midnight that uses the 4th Edition Dungeons & Dragons rules. This adventure has been designed as an exciting introduction to the Midnight setting, the same setting depicted in the pilot film Midnight Chronicles, produced by Fantasy Flight Studios. To learn more about Midnight Chronicles, please visit the wesbite www.midnight-chronicles.com.
“The Heart of Erenland” is written for a Dungeon Master (DM) and four heroic 1st level player characters (PCs). To help get players right into the action, the appendix of this adventure includes four pre-generated characters, which have been designed to help reinforce some of the essential themes to the Midnight setting, particularly the rarity of magic.