More than ever before, there have been many incidents involving "Yumemite", those who are drunk on Somnium Drop. A mysterious cult based in Shibuya, which Nuto has investigated. What are the intentions of this group that is moving even bigger? In the middle of the battle, Reina notices the existence of a girl. She still has her memories of "Desaria" and appeals to Ryuhei and the others that she is related to the cult and wants to help them.