Luffy and crew arrive at the harbour of Anabaru. The local casino is holding a competition in which the winner will obtain a huge monetary reward if he reaches the finishing line first. Nami is elated and decides to participate in the competition. However, there is a conspiracy going behind the competition and the mastermind is an ex-military commander, Gasparde. His plan is to lure all the pirates to the military base and send them to their deaths. Luffy and gang have to overcome the numerous tests and tribulations along the way to complete this dead-end adventure.

(Source: ANN)

Luffy and crew go to an island searching for a legendary sword, said to be the most expensive in the world. Soon attacking marines and beautiful maidens split the crew. Zoro betrays the crew to help an old friend, Luffy and Usopp wander through a cave, and the rest help a village fight marines. When Zoro defeats Sanji he takes the sacred pearls that are the only defense against the evil sword that will plunge the world into darkness. 

(Source: ANN)

The film opens with Nefeltari Vivi flying with Pell in a brief flashback. Returning to the present, Vivi and the Straw Hats meet Crocodile's subordinate Mr. 2 Bon Clay. Mr. 2 shows the Straw Hats his devil fruit ability, which allows him to assume the form and voice of anyone whose face he has touched. Vivi describes a brief history on how the Baroque Works leader Crocodile has used Dance Powder while posing as the country's hero. He has also tricked the rebel and royal armies into fighting each other. Once in Alabasta and after crossing the desert, the Straw Hats find the rebel's base deserted, while the rebel army, led by Vivi's childhood friend Koza, witnesses the port town Nanohana being burned by members of Baroque Works disguised as soldiers of the royal army. The rebels decide to attack Alubarna, where at the same time Mr. 2 impersonates the king, Nefeltari Cobra, and orders the royal army to engage. Meanwhile in the desert, the Straw Hats are intercepted by Crocodile and his partner, Ms. All Sunday. Crocodile aims for Vivi, but Luffy stays behind and distracts him, while the other Straw Hats escape. In the ensuing fight, Crocodile defeats Luffy by impaling him through the chest with his hook and buried alive.

The movie is a retelling of the Drum Island arc with new music and animation. Vivi has been removed from the plot while both Nico Robin and Franky, who joined the crew after the Drum Island arc, have been added. The movie also has the Straw Hat's new ship, the Thousand Sunny. It has been stated that Oda will be creating a new character for this movie, Wapol's older brother, Mushul, who also appears to be a Devil Fruit user. 

(Source: Wikipedia)