Suzuha reveals the orgins of SERN's future totalitarianism. While she continues her work to destroy the organization, Okabe and Mayuri continue the search for Suzuha's father.

With the help of Kurisu and Moeka, Okabe attempts to get closer to the IBN 5100 and the mysterious FB. As he closes in on SERN's network, he realizes that the path to victory will not be without additional sacrifice.