As a grieving parent, Nathan [The Caveman] Caves struggles to come to terms with his son Julian's death, his son's online legacy, and with a malicious internet troll that has wreaked havoc on his life. Determined to drown out his heartache with vengeance, The Caveman decides to hunt down his tormentor, delving into a world of technology he'd spent a lifetime evading.

Augmented reality.

Artificial sentience.

Cybercrime.

The deeper into the dark web The Caveman ventures, the steeper his learning curve grows and the further away he gets from the one person who understands his pain...

...his wife.