The Fifth Holy Grail War escalates, escalating the risks for all involved. Shirou Emiya, driven by his desire to be a champion of justice, plunges into the conflict determined to uncover the truth behind a malevolent shadow's deadly rampage. Concurrently, Shinji Matou schemes against Shirou using his sister Sakura as leverage. In a bid to rescue Sakura from her brother's torment, Shirou and Rin Toosaka clash with Shinji. As they delve deeper, the dark secrets of the Matou siblings come to light, casting a grim shadow over their intentions. Fate/stay night Movie: Heaven's Feel - II. Lost Butterfly delves into the struggles of the remaining Masters and Servants vying for the Holy Grail. Yet, as sinister forces stir within Fuyuki City, the very fabric of their holy conflict hangs precariously in the balance.