Tyranny of Dragons
Leosin Erlanthar was a monk from Berdusk and a member of the Harpers who researched the reformed Cult of the Dragon under Severin Silrajin during the Tyranny of Dragons.
He heard a rumour that the new head of the Cult had changed their agenda of making dracoliches to make way for their Dragon queen to emerge from the Nine hells. He was investigating in Greenest when the attack happened and got himself captured to be able to investigate the Cult up close and personal.
He along with Ontharr Frume recruited the adventurers to follow the cultists who were supposed to travel from Baldur’s Gate north to waterdeep, and then on to the Carnath Roadhouse. There mission was to find out where the treasure was headed and why, and if it was possible to stop it from reaching it’s final destination.