The plot is situated in the Duchy of stultus, more precisely at the Primrose Valley, a place that one day is visited by an old caravan under the command of Chief Servant. Among them is Toxzo, a gypsy prince whose entourage is dedicated to breeding race horses. The young gypsy fall soon surrendered...
When they are killed by the leaders of the two gangs fighting for control of the underground game, the conductor who is the heir of one of them turns his musicians into gangsters.
