In 2099, Earth has shifted off its axis and begins to rotate at an angle of 90% to the 20th-century equator. Three years of natural disasters follows, and when things settle down, Earth's ten billion population has died and only two million moon colonists remain. Some return to begin the repopulation of the world in seven new cities and the remaining colonists of the moon fear that their former neighbors might pose a threat and construct a ring of defensive satellites to trap them on the newly repopulated homeworld.

Bumboo is a very strange car-like creature with a cute yellow body. He was born from a mysterious egg at an automobile factory. Having heard the first cries of a newborn baby, a boy named Ken comes to the factory and meets Bumboo. They soon become good friends and set out on their exciting journey. Traveling the world with his four-wheeled friend and Mister the dog, Ken faces big trouble from Doctor Monkey—who wants to get Bumboo into his own hands—but finds thrills and excitement around every corner. (Source: AniDB)

Led by scientist Tatsuya Randou, the Randou family undertakes a journey around the globe in order to search out ancient ruins to uncover the legend of Quetzalcoatl, which unlocks the key to a fabulous treasure. However, tailing the Randou family is Gopurin, an evil organisation that covets the legendary treasure for itself. The Randou family has the secret weapon of super robot Acrobunch. It becomes a race around the world of who finds the treasure first. (Source: Wikipedia)