In a place not too far from here and now...
...The End of the World approaches...
The Undead appear, breaking the natural cycle of life and death.
The evolution of species ceases... and one by one they become extinct.
In the age of darkness in which people have forgotten the sun,
the "Immortals" -- the beings of the dark -- have appeared and turned
the sun city of "San Miguel" to the city of death.
The dark curse has turned all species into the "undead".
The "dark matter" has brought about the "undeadening" of all.
The man who was known as the strongest vampire hunter has fallen, and
people's hopes have been shattered.
But one day,
There was one boy who left San Miguel where the undead walk around.
This boy is "Django" -- the heir of the solar gun "Gun Del Sol" and
the last hope in which flows the blood of the vampire hunter.
He heads for "Istrakan" -- the city of death where many times and
places intertwine because of the end-of-the-world phenomena caused
by the Immortals.
Can Django avenge his father's death with the use of sunlight as
Can he stop the undeadening that threatens the lives of all?
And can he bring back to all "Our Sun?"
(Intro from in-game and official website)