What if you could talk to people from the past? Lincoln. Churchill. Gandhi. Your dead mother. Josh Brodsky is at the top of his game. At his new Silicon Valley job, he's on the verge of an invention that uses artificial intelligence to bring back the greatest leaders in history. But his top-secret code becomes encrypted by a devastating ransomware attack--was the malware planted by Josh's troubled brother Donny? When the brothers uncover their dead mother's diaries, the family careens toward a rendezvous with AI to discover the truth behind their father's mysterious death thirty years ago.