Naruto Shippūden the Movie: The Lost Tower

is the seventh overall Naruto film and the fourth Naruto Shippūden film. It was released in theaters in Japan on July 31, 2010, with advance ticket sale events on April 17 and June 19. Its theme song is "If" by Kana Nishino.

Plot Overview
At the beginning of the movie,Naruto,Sakura,Sai, and Yamato are seen fighting. Sakura attacks but Naruto comes in and uses Rasengan, using up more chakara then he has to.When he thinks he finished it off, it comes back again and Sai comes to the rescue. Sakura then scolds Naruto and teaches him a technique to pour his chakara into a blade and attack that way. He learns this and uses this throught out movie.Assigned on a mission to capture Mukade, a missing-nin, Naruto Uzumaki sets out for the once glorious historic ruins of, where he pursues and corners the rogue ninja. Mukade's goal is revealed to be a dormant leyline within the ruins; he unleashes the power of the leyline, causing a light to envelop Naruto, sending him twenty years into the past. When Naruto awakens, he comes into contact with his father (the future Fourth Hokage, Minato Namikaze).

One trailer has shown that during this period, Minato was on a team with Shibi Aburame and Chōza Akimichi, seeking to intervene in the conflicts enveloping Rouran, with its Queen Saara in the middle of the crisis. A young Kakashi Hatake is tagging along with them.

In the trailer, Naruto is seen wielding a chakra infused kunai-like blade and fighting unknown mechanical figures. Minato is also seen interfering in the fight, aiding Naruto. He asks Naruto if he is a Konoha shinobi.

Also, in one trailer, Naruto and Minato combine their Rasengan.