Siera Black never believed in God or religion, even though she attends a catholic school. When a boy, named Pureos, comes into Siera's life she instantly hates him. Her anger and disapproval of Pureos and his beliefs instantly intrigues him. One day, after Siera comes out of class, Pureos kisses Siera and, in all the confusing and shock, it kills both Pureos and Siera. After being split in Heaven and Hell, a war of both rulers upraises. In an epic story of romance and war, the tale of two complete opposites merge in one like ying and yang.