Many centuries ago the goddess Parvati was having trouble keeping both sides of her being under control, Durga and Kali. She then decide to sacrifice herself and created two separate entities. Durga decided to remain at Shiva's side, but Kali ventured forth to dark places unknown. But the powerful energies released from Osiris' rage have drawn Kali back, and with her she brings an army of demonic beings to decimate the Pantheons and take the power for herself.