Buffy the Vampire Slayer: Season 8

In an attempt to throw off Twilight and the forces hounding them, Buffy and her allies have tried to shed their magics deep into the Earth. But now the enemy is on their doorstep, and they're powerless. With the aid of Oz's wife, they've called forth ancient Tibetan goddesses to repel the invaders, but it becomes quickly apparent that those goddesses are rampaging across friend and foe alike.

Daring the thick of the fighting, Buffy rushes out to find Riley - who's been her agent among General Voll's military forces, and is the one person who might be able to tell her how to turn this around.