When The Machine spits out five numbers, naming the Don of each of New York's crime families, Reese and Finch suspect Elias is planning to eliminate his competition. The town is filled with corrupt police known as "HR", and there are a group of F.B.I going after them, but who believe that Reese is working for Elias. Reese also has to save Carter's son, who has been kidnapped by Elias. Reese attempts to ask one of the Dons to follow him but he refuses and is killed in a car explosion set up by Elias. Carter kidnaps the remaining 3 Dons and takes them to an apartment owned by Finch but are tracked down with ease by "HR" cops. Elias goes over to the apartment and threatens Carter to open the door while Reese rescues Carter's son and Gianni Moretti, Elias's father. One of the Mafia members then reveals he was working with Elias but is killed, as Elias breaks through the door. Non-corrupt police were alerted by Fusco and arrive at the scene to arrest Elias. As Elias is going to his cell, he places a call to his recently rescued father before blowing up the car he is in. This episode primarily features Elias's past.