Here is the plot summary of One Piece:
Before he was exacuted, the legendary Pirate King Gold Roger revealed that he had hidden the treasure One Piece somewhere in the Grand Line. Now, many pirates are off looking for this legendary treasure to claim the title Pirate King. One pirate, Monkey D. Luffy, is a boy who had eaten the Devil's Fruit and gained rubber powers. Now he and his crew are off to find One Piece, while battling enemies and making new friends along the way.
And here are the background of this anime, One Piece:
One Piece is a long-running shonen manga written and illustrated by Eiichiro Oda, that has been serialized in Weekly Shonen Jump magazine since August 4, 1997. The individual chapters are being published in tankobon volumes by Shuiesha , with the first released on December 24, 1997 and 54 volumes released as of June 7, 2009. One Piece follows the adventures of Monkey D. Luffy, a 17-year-old boy, who gained supernatural abilities by eating a magical fruit, and his ragtag crew of heroic pirates, named the Straw Hats. Luffy's greatest ambition is to obtain the world's ultimate treasure, One Piece, and thereby become the next King of the Pirates. When creating the series, Oda was heavily influenced by the manga Dragon Ball.
One Piece is licensed for an English language release in North America by Viz Media. The individual chapters are being serialized in Viz's Shonen Jump manga anthology and being published in tankōbon volumes. In the United Kingdom, the series was being released by Gollancz Manga, it is now released by Viz Media along with all of their other manga previously released by Gollancz Manga. Madman Entertainment is releasing the series in Australia and New Zealand.
The series was adapted into an original video animation (OVA) produced in 1998 by Production I.G. It was later adapted into a full anime series by Toei Animation that premiered in Japan on Fuji Television on October 20, 1999. Since then, the still ongoing series has aired more than four hundred episodes. The anime series was licensed for a heavily edited English dubbed broadcast in North America by 4kids Entertainmant. It has since been licensed for a full Reg DVD release and broadcast by Funimation Entertainment in its original and uncut form. In addition to the anime series and OVA, One Piece has been adapted into nine feature films by Toei and multiple video games based on the series have been released.
With over 158 million copies sold, One Piece is now the highest selling manga in the history of Weekly Shōnen Jump. It is considered their most acclaimed and all-time best-selling title in Japan.
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