many centuries ago,when the dragons was still alive,when elf's, vampires, werewolves was living together with humans

An Dragon hunter his name was Jack he was the most dangerous hunter in the whole world

Time skip (nowadays 1993)

The years passed,the hunter was too weak and sick, before he passed away, he said

Jack: LOCK THE LAST DRAGON AWAY FROM THAT WORLD!!! then he died

The dragon was locked away,for years, chained all over, hungry. Until now