The film is a direct sequel to the film Mahou Shoujo Lyrical Nanoha Reflection. Iris, who betrayed Kyrie, now controls Yuri after freeing her from the crystal that imprisoned her. The two fighters largely dominate the Temporal Administration Bureau, but the three key souls, Dearche, Stern and Levi feel a strange connection with young Yuri. Nanoha and they will try to discover more in order to free her from Iris's grip, also with the hope of reasoning with the latter.