Travelling to Yankovo

The party receives a summons from a friendly black dragon.

Party is woken by an adult dragon landing at the inn and the sound of shouting as the city guard prepare to battle it.
When the party approaches the dragon, it leans down and spits out a letter. The letter is a summons to the city of Yankovo Perovye, and is signed by "P & Co."
The party travels to Yankovo, passing though the Amshire Plains and Quan Ma (chapters 2 and 3).
They arrive outside of Yankovo, the dragon that first delivered their summons will find them and lead them to their destination, a large cave in the forest outside of the city.
Morose is waiting for them there.