Somewhere, into an universe not so distant from ours, is a funny society.There, People are born goblin. Afterwards, either you stay goblin, or you become marionette. It's rather hard to stay goblin, but you can very easily become a marionette, without knowing it. The threads grow very quickly and it's hardly impossible to lose them.
The goblins live hidden deep into the woods, perched on the branches of the trees. Most of
their business consist of making music, adjuring the menace that marionette society constitutes for them.
There are all sorts of marionettes,ranked into different compartments, according to the color of their threads.