Hoard of the Dragon Queen is a campaign module of the Forgotten Realm. This is considered one of the best 5e modules of Dungeons and Dragons.
Coming to Hoard of the Dragon Queen, you will have adventures very different from other 5e books, for example Princes of the Apocalypse or Elemental Evil Player’s Companion. You will begin your adventure by fighting vampires and a white dragon, this is an attractive task just starting the game.
Do you like demons, dragons and weird things in the world of DnD? If so, this is probably what will satisfy you.
D&D Hoard of the Dragon Queen PDF download link