Naruto the Movie: Blood Prison

is the eighth overall Naruto film and fifth Naruto: Shippūden film which was released on July 30, 2011 in Japanese theatres. The official DVD release date in Japan is announced to be April 25, 2012. The English subtitled version was released on April 25, 2012.

Plot
The film starts with A discussing a box with Omoi, Karui, Samui and Mabui, when suddenly gas covers the room knocking everyone asleep. Then a hooded figure leaps out attacking the sleeping Raikage, only for the figure to stop right before killing A. When A is seen above the figure, the figure dodges, and is able to fight equally with A. In the battle A is able to destroy the hood, revealing the hooded figure as Naruto Uzumaki. A is shocked, taking advantage, Naruto escapes. As Team Samui and Mabui wake up, A tells them to summon Killer B.

In Konohagakure, Tsunade states that Naruto is wanted for attempting to assassinate the leader of Kumogakure, the Raikage, and killing jōnin from Kirigakure and Iwagakure to Team Kakashi. Naruto and Sakura refuse claims, but Tsunade states Naruto will be placed in Hōzukijō, a criminal containment facility, also known as the "Blood Prison", in Kusagakure. Naruto attempts to escape, only for Yamato to encase him, and Tsunade takes away his forehead protector. When Naruto arrives at Hōzukijo, Mui, the head of the prison, quickly places the Fire Release: Heavenly Prison on Naruto, sealing his chakra. Naruto learns this the hard way after using his shadow clones, Naruto quickly collapses from the pain caused by the seal. Naruto is later taken captive by Maroi who is working for Mui, when Naruto is brought to a lab, Mui realises that the Naruto taken was a clone. While the real Naruto was hiding, he used the chance to escape. But the pain from the seal made him pass out, he was taken into solidarity confinement. When in solidarity confinement, he hears a mysterious voice say, if he can defeat Mui, then the seal will disappear. Naruto then after being released, attacks Mui. But the seal causes Naruto to collapse, and he is taken back into solidarity confinement. During the fight, Mui questions Naruto devotion to his home, wondering why bother be loyal.

When Naruto is released, he is looked up to, by the rest of the prisoners, including Maroi. Naruto, later attempts to escape again, by knocking out one of the guards, and taking his clothes, when his shadow clone fools everyone. As he is able to get to the edge of the island, when Ryūzetsu tells him to stop. Naruto refuses to listen, and he jumps into the whirlpool. He nearly drowns, but Ryūzetsu helps him. Naruto sees that she is a girl, and that it is her mission to kill Mui and stop the Box of Ultimate Bliss. She reveals that Mui even sacrificed his son to the box and Mui set Naruto up. She asks for Naruto's help to destroy the box. Naruto agrees, the next day Naruto challenges Mui again, but is defeated and taken to solitary confinement. When he leaves, Naruto shows that he left a clone charged with senjutsu. While Naruto is confined, Ryūzetsu attempts to kill Mui only to reveal that she attacked Maroi, Maroi forms an alliance with her, saying he is not really on Mui's side, just the side that benefits him most. Ryūzetsu tells Naruto the whole story, that Mui's son was her best friend.

Naruto and Ryūzetsu pretend to fight, while engulfing the entire courtyard in the fright, while Maroi forces prisoners inside to fight as well, creating chaos. In the chaos, Maroi performs a technique in the sky, while Naruto tries to find the box. Just before he is able to destroy the box, he is captured by Mui. Mui extracts some of Naruto's chakra, allowing the box to revive. Naruto is able to escape. Mui then reveals that his wish is to revive his son. The box grants his wish, opening up, allowing a grown up Muku walk out. Muku then impaling Mui, Ryūzetsu calls him on this, causing Muku to transform into the Satori. When all chaos breaks out, Naruto enters Sage Mode and then tried to use Big Ball Rasengan on the Box of Ultimate Bliss to destroy it but fails. Naruto then is engaged in combat with Satori who defeats Naruto's shadow clone. With Naruto unable to touch Satori he then states to fight a monster, one must use a monster and summons Gamabunta to help combat Satori, but they can't attack him, due to their moves being predicted before-hand. Eventually, Naruto runs out of senjutsu, allowing the Satori to attack Naruto forcing Gamabunta to defend him, forcing Gamabunta to leave, as the Satori attacked again, Naruto is saved by Killer B.

As Naruto is amazed that Killer B is there, he sees that all his friends have gather there. As Naruto wonders why is happening, Tsunade reveals that it was Naruto mission to destroy the box, but he had to kept out of the loop, out of fear of him attacking head on. And that no one believed that Naruto really committed any of the crimes, and that Maroi was a friend of B's and he was the mysterious voice. Naruto decides to attain Sage Mode once more and tells Killer B and the others to distract Satori, while he does this. Naruto is able to realize that the Satori can not read people minds, only fear, allowing Naruto to fight Satori evenly in Sage mode. Naruto attempt to end the battle creating a large Rasengan, with two clones when Satori impales him and Ryūzetsu. Naruto is able to wake Mui, and having his shadow clones hold, Satori wings, pushing the Satori back, allowing Mui to weaken it. While Naruto frees him and Ryūzetsu, and defeats Satori by firing a Wind Release: Rasenshuriken and returns Satori back to normal. Muku returns to normal, but he kills both is father and himself, saying sorry to Ryuzetsu. The prisoners attempt to escape, only to be stopped by the Konoha 11 minus Naruto. Sakura attempt to heal a dying Naruto, but has no success, till Ryūzetsu revives Naruto, by using her kekkei genkai but at the cost of her life.

In the aftermath, Mui and Ryūzetsu are shown buried next to each other. Naruto ties Ryūzetsu's bandanna around her gravestone.

Trivia

 * Despite taking place after the time-skip, this movie drops the "Shippūden" in its official title.
 * The timing this movie takes place is very uncertain as story elements present in the proper story are present while others are not, such as;
 * Naruto knowing Sage Mode, despite the fact that Konoha was not destroyed by the Invasion of Pain.
 * A still has his left hand, despite losing it not long after the Invasion.
 * Naruto knew Killer B, but did not meet him until their training at the Island Turtle.
 * Despite the fact that Masashi Kishimoto mentioned that the world of Naruto will not have any firearms, there were plenty of Blood Prison guards holding firearms, such as a flintlock rifle, though none of them were ever seen to be used.
 * Unlike the anime/manga, each time Naruto entered Sage Mode, the red coat he wore against Pain would appear on his person for no reason, and would disappear when he exits the mode.
 * The forehead protectors that Muku and Ryūzetsu wear shows the Kusagakure symbol with four blades, although the actual symbol contains only three.
 * The sculpture shown in the castle itself is the Ecstasy of Saint Theresa by Bernini, which illustrates a moment where divinity intrudes on an earthly body.