This review is kind of hard to write as it contents some mature content for people over the age of 16 and will take people who are over the age of 18 or 21 to understand fully what the scene is about as I am trying to avoid some words.
The movie starts off where we had left off, Shinji called Sakura up and plans to use her to get to Shiro and Rin. They fought each other for a moment and they reveal that Shinji wasn't the Master of Rider but Sakura, Shinji got pissed when Sakura and Rider did not listen and are going against the plan that they had planned out ages ago. Sakura got hurt and was taken to the church, where they learn what happened to her and that the worms that help her to make her more powerful is going to kill her and that she is in pain and will not be able to live very long, the worm that Kirei was talking about has been shown before and it was something very close to what drop from Zoken and that worm was also seen in the prequel of Fate/Stay Night as in the scene that Kerei explained to Shiro and Rin. Shiro also learns that Sakura was Rin's sister and learn the truth about her family only one can take over the family's name as the one and only bloodline. Rin some knew about what Sakura has been through but did not do anything about it because she did not have any said back then, she even goes to tell Kerei is alright to kill her in order to put her out of the pain that she is going through. Over the course of the movie things gotten from bad to worse. Sakura needs to it so that her mana flow will be more stable but Shiro was too dumb to understand what she was saying and he did understand what she meant later, as they did it. Sakura even asked if it is alright and that she is no longer a virgin and all, but she did not outright tell Shiro who was the one that she did it with. It was kind of written all over it and pretty much known that it was Shinji. Of course, Sakura did not want it. Sakura and Rin become closer than before as Sakura started calling Rin sister after hearing what Shiro told her, she becomes insecure when Shiro and Rin were talking about the Holy Guild War. As time passes Berserker started to move and was killed by Zoken who now commands Saber who has turned to the dark side also know as Saber Alter. Shiro loses an arm and was saved by Archer when he gives up his life for him or in this case for his other self for people who know his identity. Later, Sakura has when on to kill many people, the people that had kill previously and in the movie was all her doing that dark shadow was all her doing. She kills Gilgamesh too, the most powerful servant and the winner of the 4th Holy Guild War 10 years ago. Sakura realizes this and runs away, she went back to Mato's mansion where Shinji tries to attack her but she killed by her and she fully turns dark as the theme song started playing. Before this Sakura made Rider promised to promise Shiro and not to hurt him no matter what happens. Also, Illyasviel learns that her father did go back to look for her but no vine. Shiro also learns that fact too and tells her their father cares very much about her.
The animation was really very awesome, the fight scenes and all was awesome like they always does, the soundtrack by Kajiura was awesome like its first movie in fact throughout the movie I keep getting the chills by hearing the soundtracks as it was too awesome and fits the scenes very well and the feeling of the scenes too.
Rating: 10/10