Setsuna and Rui find themselves conducting an undercover investigation at a bizarre matchmaking party on MultiEarth Λ8018. Reiji also rushes to the scene from another dimension, and the three of them, in disguise, begin making contact with the suspicious attendees. Just then, a mysterious queen wearing a mask appears, and the party venue turns into a “battlefield of love swirling with desire”…!? Amidst all this, Setsuna’s “time-transcending feelings”—driven by his determination to protect what he holds dear—are revealed.