"Takarth, daughter of Zorith the Dragon King, is the great and good ruler and protector of the valley of Erithzire," says the man. "She kept the good people safe with her presence, until one day about a month ago she vanished. I am Asmit, Leader of the council of Erithzire, and we have been making excuses about her absence. If it was known she was gone, there would be panic and chaos throughout Erithzire. We set up a magic chalice and a portal in another world, and waited for a female to drink the chalice and gain the likeness of our beloved Takarth."
"You mean I have to give up my old life and pose as this dragon?" you ask, sitting on the edge of the dragon-sized bed.
"Takarth is not dead," replies Asmit, sitting on your huge foot. "We can sense her, but cannot locate her. She may be kept hostage somewhere, or lost in another world, or transformed, or all at once. You only have to pose as her, to re-assure Erithzire, until we can find the real Takarth. Once she is returned you will be restored to human form and returned to your own world."
You think for a moment "I'll do it."