Focuses on the adventures of the brave unicorn girl, Acorna, as she faces her most difficult challenge ever. She has defeated slavers, a deadly international conspiracy, and the vicious alien Khleevi, only to endure the loss of her beloved Aari, distant in both time and space. Having rescued her people from their enemies, Acorna is disturbed by sinister changes that are demonstrated by her beloved lifemate. Aari, a situation that is complicated by the workings of a vicious criminal and the deadly Khleevi.