Keller is a seemingly ordinary seventeen-year-old girl, sweet and serious. But only until she gets furious... She is a black panther, a werewolf, and is used to fighting and winning at all costs. The new assignment - guarding Iliana Harman - is not to Keller’s liking. Could this ignorant dummy really be the legendary Indomitable Force, one of the four who will prevent the end of the world? Will Keller be able to convince her to at least temporarily give up entertainment and seriously think about her destiny? And what about Galen? She and Keller fell in love with each other, but this love can destroy everything...