Shiki Ryûho is a young hunter, a Monster Hunter! Since the death of his master Gurelli, he has set himself in mind to realize his master's dream: to find the legendary dragon Miogaruna. For this, Shiki goes to the city of his late master, Akamaaya where he meets Irie, a lonely and stubborn hunter who finally agrees to team up with him. It is then that a fantastic adventure begins to find Miogaruna in this world full of monsters and adventurers!