沙漠之国阿拉巴斯坦，虽然当地气候恶劣，但是国王寇布拉爱民如子，为了将国家建设成美丽的绿洲始终和百姓不懈努力。然而就在两年前，奇怪的现象离间了国王和百姓的关系。因为容易引起纷争，世界各国已严禁使用名为Dance Powder的降雨粉。但是阿拉巴斯坦曾大量购入Dance Power，在此之后，除国王所居住的阿鲁巴纳降雨正常外，该国其他区域全部为干旱所统治。一些民众认为寇布拉为己牟利，在克罗克塔尔的煽动下，反叛军揭竿而起，国家危在旦夕。
寇布拉的女儿微微公主逃离国家，与路飞等人结伴而行。他们偶然遇见了会变换各种容貌的孟德勒，从而得知克罗克塔尔的阴谋。海盗团扬帆起航，向阿拉巴斯坦进军，一场沙漠大冒险就此展开……

Luffy是镇上的捕头，Usopp是他的搭档。Nami和Sanji经营着“风车”餐厅。ZORO是一个和尚，而乔巴是镇医生。和许多其他在TV中出场过的熟悉人物。

In 1966, five infant children were kidnapped by an alien group known as the Alien Hunters for the Reconstructive Experiment Empire Mess, who wanted samples of humans from Earth to experiment on. The children were rescued by Mess' arch enemy, the Flash alien race, which took each one to a different planet of the Flash solar system for training. Each child was trained separately in a range of superpowers that will allow them to fight Mess, their bodies also adapted to the atmosphere of the Flash Solar System making them gain special abilities. When they finally return to Earth in 1986 to combat Mess, who is now trying to invade it, they use the opportunity to search for their birth parents.