The Luna's possessive guardian

“Alpha Arnold of Greenland Park was betrothed from a youthful age to the Luna of the Tiger Park, Alicia in allegiance to maintain the interconnection between the two parks. They lived in bliss for five years until a sudden attack occurred. The majority of each park including Alicia were taken captive by the soldiers of the great Genovia. Several years later, Arnold turned out to be the crown prince of Genovia. Alicia thought it was the beginning of a new life after she was summoned to the palace by her childhood lover, but she got whacked by the realization that she was called upon by a totally different reason and that the one she had waited for years, was now the opposite of what he used to be. She quoted him as a "lowlife devil" How did Arnold become the Crown Prince? Why were they a victim of an unexpected attack by the Genovian soldiers, and will they still find a space in their hearts to forgive each other?”