It is the year 2456...War is raging between humans and the alien invaders known as Seele. After a decade of failed attempts at cracking the human defenses, the Seele have become desperate. As a last resort, they attempt to bend the space-time continuum to destroy human civilization at it's inception. You, a special operative of the Kepler organization, have been chosen to follow them back in time and stop them before it's too late...