Eric is a teenager who is summoning demon.
And what he got is Rincewind who happened to be there when the portal open.
Eric demanded three wishes. Money, power, woman, the usual.
Of course, Rincewind has no magical power to grand wishes. But the demon who is into wishes seems to be using Rincewind to make Eric's wishes come through in the worst way possible.
First they were captured by an ancient tribe and they give tribute to Eric before trying to sacrifice him.
Then, they went into the city of Troy where Helena was supposed to be the prettiest woman alive and got the truth.
Then they run int othe beginning of time.
Fun read. Some parts are laough out loud funny.
Reading this for Hog-father.