Uni's time with Nepgear is cut short by a sudden call for assistance from Noire. It soon becomes apparent that Lastation is not the only nation facing peril. The gate between Neptune's world and Plutia's has been hacked, and a murderer from another time-stream has arrived with a chilling agenda. Set after the events of Neptunia V.

Blanc had never thought of herself as a family person. That was what she told herself anyway. Maybe the truth is that she just wanted to forget.