The plot of Heroes of Might and Magic V.

Hello. 1. Where can I find the missing scenes of the storyline about what happened after the Alliance defeated Kha-Belek in the original game – when they went to the Silver Cities of the Mages? 2. How did the storyline of Heroes of Might and Magic V end, with the victory over Biara? Where can I find the continuation? 3. Where did Railagh disappear to? What are Heroes of Might and Magic 1.1, 5.5, 3.x? Are these like patches? And which patch is the latest? And where can I download additional campaigns for Heroes 5? Thank you to everyone who answers.