Kiara Cross is the youngest daughter of Daniel Cross, the world's most notorious Warlord. Her life comes to an end as the Greater Los Angeles comes under attack by the combined might of the world, as they found out that her father has the Holy Grail; a rock with unfathomable powers. While she was escaping with the Holy Grail, with her maid and best friend Ester, the invaders decided it was a better choice to salt the earth and detonate her father's captured nuclear bomb.

A plea, and a Goddess who hears it through the fragment, Kiara is transported with her friend into a cruel world full of monsters and evil to become said Goddess's personal assassin to settle very, very personal scores.