Aware that they are walking into a trap they party still decided to go to Lord Gavorn’s party and confront him. Lord Gavorn begins the party by showing off a strange magical artifact. It is a small golden tetrahedron with intricate magical runes. He touches the artifact in a very deliberate pattern and a large bubble of darkness envelopes the estate.
In the ballroom the party fulls under the spell of a strange unearthly singer and fall into a sort of drunken haze. Gavorn begins to dance with Sariel and reveals that he knows who her father is and reveals himself to be the vampire Lord Strahd Von Zarovich After putting Sariel into some kind of trance he gets her to wield the rusted Orb. Rolan breaks free of the spell and fires arrows at the strange singer. But it is too late, Sariel lifts the orb and incinerates the ballroom crowd with black fire that pours from the orb. Vampires leap from concealed positions and the fight is joined.
The party fight through the ambush, but Sariel is once again bound to the orb. This time she cannot even let go of it. They find that the orb of darkness generated by the strange artifact prevents them from leaving. They search the mansion finding an underground catacomb. Upon entering the catacomb the hear Strahd arguing with one of his underlings. The underling wants to know why they don’t just kill the adventurers, but Strahs says that Sariel is far too important to him as “leverage.” Stahd leaves his underlings to fight the party and instructs them to bring him Sariel alive.
The party fights through the catacombs defeating Strahd’s minions. They find a study that contains records of the assassins guild that strahd’s lieutenant has been running. In the records they find that Rolan’s contract had been given for a sum of 5 astral diamonds. The ledger also mentions that his contract had been given to an assassin called “R.” They also find the means to disable the artifact, they do so and take it with them.