No matter how hard you try, it’s impossible to start completely from scratch. Too many events from the past, too many bad decisions, too many ghosts. Young programmers Sean Eagle and Billy Stafford, after almost two years of hard work in a hut on the Eagle family estate, created something that could enrich both of them - the revolutionary computer algorithm Eagle Logic . But the growing tension did not benefit their once strong friendship. And now, years later, Billy is a loser suffering from poverty and addiction, and Sean is one of the most famous and richest people in the world. Sean wants to resurrect Nellie, the clever computer program he and Billy once worked on, and installs it in the family mansion. But something is clearly wrong with Nellie. What evil lurks in the source code they wrote? Sean is forced to turn to Billy for help...