Mysterion's sister is in dire straits, entangled with the mischievous Vamp Kids of South Park at Cartman's beloved Casa Bonita. A FRESH TALE – Venture into Black Bart’s Cave, marvel at the cliff divers, savor the essence of Mexico, and vanquish the vampires. A NEW ALLY – Join forces with Henrietta, the formidable Goth Witch, to aid in your quest. A NEW CLASS – Wield darkness with the new Netherborn class, featuring four unique occult abilities.