The "Girl with the Turtle Tattoo" has traveled 2,000 years into the past on a terrible mission. To prevent the looming extinction of Homo sapiens by invading aliens, she must kill a beloved religious icon. Growing up in the family of the young Jesus, however, Sally falls deeply in love with him. If she can't steel herself to murder him, might she instead tempt him from his holy path? But she knows her betrayal will crush his soul. Can she overcome her doubts sufficiently to recognize and attack her true worst enemy? Or will the awful truth locked deep in her genetics doom her, those she loves, and Earth itself? As she matures Sally discovers her true task: blending equally bad priorities into a fresh reality where Love is strangely adaptable...