A amysterious group of ninja called the Sora from the Sky Country
makes a surprise attack on Konoha for vengeance due to Konoha nearly
destroying the Sky Country during the last Shinobi World War. At the
same time Naruto, Sakura, and Hinata are sent along to help a boy’s
village. They accompany Amaru, the boy, and Shinnō, his sensei, back to
the village. Later Naruto notices that Amaru is in fact a female due to
her falling into the water for her scapel.
Meanwhile at Konoha, the Sora-nin retreat with their dwindling chakra
supply. Tsunade sends another special team consisting of Kakashi,
Shikamaru, Sai and Shino to look for their base and later on as the
movie progresses Sai and Shino successfully destroy the ships which the
sky ninja are stationed and thus leaving Konoha (the leaf village)
victorious.
At Orochimaru’s lair, Orochimaru is now ill because the body transfer
jutsu he uses is close to expiration. Orochimaru orders Sasuke to get a
man who is able to help him perfect his reincarnation jutsu. Naruto and
company reach Amaru’s village and finds the village in ruins and its
inhabitants missing. Amaru triggers a trap while searching for the
villagers but Shinnō protects her and dies in the process. After Amaru
comes to her senses they continue to look for villagers.
Later on Hinata becomes separated from Sakura and Naruto. Naruto and
Sakura later find themselves in front of an evil monster called Zero
Tails, a being that feeds on the darkness of human souls and had somehow
possessed Amaru. Sakura proves to be no match for the beast; the
creature senses that Naruto has a huge dark energy/power inside of him
so it taunts Naruto and tries to make him use that power causing him to
take on the Nine Tailed Fox chakra and, eventually, goes into four-tails
state. The present Sakura gave Naruto from Jiraiya contained a seal,
which suppressed the Nine Tailed Fox chakra, allowing Naruto to take
over. Naruto tells Amaru to ignore the darkness in her heart which
finally results in the beast getting defeated.
Eventually they decided to separate; Naruto going on to look for the
villagers and Hinata with Sakura returning to Konoha for help. Amaru,
who was supposed to go with Sakura stays to help Naruto. Immediately,
the ruins rise from the ground to reveal Ancor Vantian, a floating
fortress. They decide to search in some ruins and find Shinnō alive.
Amaru, excited that her sensei is alive runs to hug him, but Naruto
