Science Fiction has always been a part of the Heroes world and fits in perfectly. Forge has its own storyline - take a look and read it on the website.

As is already known, the original AB storyline has many interrelations with MM VII. There, by taking a powerful artifact, they defeat these "evil" newcomers from another world, who ally with Archibald Ironfist and his guild of necromancers. Forge is being rebuilt. The newcomers now only have to build their own army. Convincing goblins and modifying zombies was not a big problem. They even managed to get some minotaurs, nagas, and ogres to fight on their side! With this army, they begin their campaign. Their primary objective is to conquer Erathia. Queen Catherine and her husband, Roland, cannot fight such a powerful army, but they follow the old legend about a sword called Armageddon's Blade. A mysterious elf named Gelu helps them to protect his country, AvLee, but he knows that he must also help Erathia. Of course, Catherine finally finds the mighty sword and destroys all the Forge towns. We don't know what happens to Archibald in the original storyline (in MM VII, he is betrayed by the newcomers and condemned to live on a small island until the end of his life, but we don't know if this part of the storyline was changed later), but for sure Archibald has to fight in AB.
The end is known and unchanged - Armageddon's Blade is given to Gelu, and Catherine and Roland return to Enroth. The rest of the AB campaign was only changed a little bit (mainly changes in the text signs :P).