Led by Yamato, Naruto Uzumaki, Sakura Haruno, and Sai are assigned to capture Mukade, a rogue ninja who is pursuing the ancient chakra Ryuumyaku located underneath the Rouran ruins. While the Ryuumyaku has been sealed by the Fourth Hokage, the group fails to prevent Mukade from releasing its power. Consequently, a strong energy burst engulfs both Naruto and Yamato before they can escape.

As he awakens in a magnificent yet hostile kingdom, Naruto meets its young queen Saara and three Konohagakure ninjas on a top-secret mission. They reveal to him that he has time-traveled to Rouran 20 years into the past! To make matters worse, Mukade has already infiltrated the royal court, becoming the naive queen's most trusted minister under the alias Anrokuzan.

Joining forces with the three ninjas, Naruto must protect Saara's life without fail to stop the villain's plans and return to the present.

[Written by MAL Rewrite]

After being captured for attempting to assassinate the leader of Kumogakure, the Raikage, and killing Jounin from Kirigakure and Iwagakure, Naruto is imprisoned in Houzukijou, a criminal containment facility also known as the Blood Prison. 

The master of the castle, Mui, uses the ultimate imprisonment jutsu to steal power from the prisoners. In this place, something is aiming for Naruto's life. The battle to prove his innocence and uncover the truth has begun for Naruto and his friends.

(Source: AnimeAvenue)

Woonan is the legendary Great Gold Pirate, earning the nickname after accumulating about 1/3 of the gold available in the world. Even after his disappearance, the tales of his gold being stashed away in a remote island continue to persist, a juicy target that other pirates lust for.

One of the pirates going to great lengths to attain the treasure is El Drago. He and his crew have hunted down Woonan's former crew members one by one, and along the way, they find the map that will take them to the hidden island.

The map is not all they come across; they also manage to come into contact with the straw hat pirates. After a short battle, Luffy and company are robbed and separated from one another. Now they must find a way to make it to the island before El Drago does and take the legendary treasure for themselves.

Informed by the Thief Brothers his ship has been stolen by the Trump Kyoudai (Trump Siblings) who have set up base on Clockwork Island. Monkey D. Luffy, Captain of the Going Merry and aspiring Pirate King works with his crew - Usopp, Zoro, Sanji and Nami to battle their way up Clockwork Island to reclaim their ship.

(Source: ANN)