Following the events of the last book Seraphina and Zen have been separated once again and are living in different centuries, unable to reach each other. But Sera doesn't seem to mind - she has moved on and is living with the enemy in the Diotech compound, passionately in love with the only other person in the world created by scientists and genetically programmed to be her soulmate.
But when the new couple embarks on a tour to show off Diotech's scientific achievements, Sera's mind starts to rebel and despite all her best efforts she can't stop the memories of Zen from creeping back in. Soon Sera's past comes rushing back, forcing her to question everything she thinks she knows.
Will Sera remember why she was in love with Zen in the first place and rebel against the evil corporation who created her, or will the lovers remain enemies forever?