This is the story of a boy named Train. As far as he could remember he has always been living on his own. His father died shortly after he was born, and his mother works over seas. Train being alone most of his teenage life has become a problem student, and generally someone eveyone tries to aovid. Then one day Train gets a visit from his aunt (dad's sister). She tells him that she has arranged it with his mother for him to live with her out in the country. Reluctabtly Train refuses to go, but since he can no longer attend any schools where he is currently living he is forced to go with his aunt. His aunt works as a geologist who takes readings from a fault in the country. She brings Train with him to work one time, but something mysterious happened. When his aunt and Train where exploring the fault, Train fell down into a shaft and found an amazing piece of stone. His aunt finds him later down in the shaft, and explains to him exactly what that stone is. She reveals to him that he is the descendant of a line of guardians who stand watch over the stone, and that the stone itself is actally an extraterrestial relic that holds an unimaginable power. When Train and his aunt get back home, Train decides to pay that stone a little visit. In doing so he somehows trigers the relic to actiate and fuse with him. This activation sends an energy signature through the cosmos, and the five other planets that were hiding the relic on earth find out that its location has been compramised. The quickly arrange a team of 5 specialists to go to earth and protect the new host for the relic. Turns out the send 5 alien girls to earth to protect Train. So nowcountless bounty hunters, pirates, criminals, and other dangerous aliens appear on earth in order to rip out the relic from Train.