The Survivors: Enigma takes place in an alternate reality, where the plague that defined the characters in The Survivors never happened. No Ebola X, no end of the world, no devastating trauma that drove every single one of the survivors to the brink - and sometimes over it. The world is still whole. Now, in a timeline running parallel to the timeline in The Survivors, our favourite characters have grown up, gone on to university, found careers, and lead blessedly normal lives. Or perhaps not so normal.

Detective Chan is on a mission. The children of Hamilton have been vanishing without a trace, and he's the only one who believes there is more to it than some children running away from home. Finally, he convinces his sergeant to bring in expert help, and he meets a digital forensics specialist named Sandrine McDermott.

Soon, he discovers that there is more to the mystery than meets the eye, and more to his new friend Sandy than he ever imagined could possibly be real. While Detective Chan is struggling to redefine his understanding of reality itself, the race is on to save the children before it's too late.

Can they find the children in time, or will they be lost forever?