Mordred Pendragon, the Bastard Prince, has done a Bad Thing―again. Exiled to Canada for seven years, he has to find a job to pay his bills.

For reasons he refuses to reveal, Mordred decides "Software Engineer" has a nice ring to it. And though experience with "killing the Once and Future King, my father" and "that time in feudal Japan" makes for a poor résumé, he is hired by a small tech startup in Toronto.

In the midst of dealing with a crippling caffeine addiction and learning C++, Mordred thinks he has finally found someone to anchor him to the world of the living: Alan, the company's off-site lead developer.

Except that Alan might not be a "living" entity at all―he may, in fact, be the world's first strong AI. Or a demon that mistook a Windows install for the highway to Hell. Or, just maybe, the ghost of Alan Turing, currently inhabiting a laptop.

Mordred's attempts to figure out his love life are hampered by constant interference from the Inquisitors of the Securitates Arcanarum, corporate espionage, real espionage, a sysadmin bent on enslaving the world, and Marketing's demands that Mordred ship software to the Russian Federation. Then Alan gets himself kidnapped. To save him, Mordred must ally himself with the company's CEO, who will stop at nothing to rescue her lead developer so he can get back to work. But the Prince doesn't just want to rescue Alan, he wants a Happily Ever After―and he will travel beyond Death itself to get one.

Too bad Alan is perfectly happy as a computer.