The story follows the life of a teenager, "Monkey D. Luffy", who has the ability to stretch his body in any way and holds the properties of rubber. He is an extrovert character who is both stupid in personality, eats way too much food and is completely unreasonable when he wants something. His personality is almost equal to that of Goku from Dragonball, Naruto and Natsu from fairy tail. This criticism exists that one piece is another shounen anime with the same stereotypical protagonists. This is true, however, it is still the great original shounen anime and if you enjoyed any of the above you will love this one too.
The anime is quite old and currently has over 650 episodes, this makes starting the anime for some people non viable due to the old graphics not being in tip top condition. YOU GET USED TO IT; and the graphics improve over time. There are tonnes of mysteries in this anime that are still being debated (which i will not spoil).
Character wise there is great versatility and for some of you anime lovers there are parts where the ecchiness and comedy gets off the charts, but because Luffy is a character who doesn't understand the concept of "mature relations" (*cough...sex) they do not develop.
If you want to watch a great anime with incredibly interesting fights and imaginative powers (called devil fruit powers in their world. E.g. control of the elements, alter your body, create earthquakes, control shadows etc...) then one piece is right for you.
