However, some unseen force destroyed the ship before the crew could escape, leaving only a few survivors. Three hundred years later, Terra II flourishes as an all-male society achieved only through advanced cloning. They were able to create variations in the genetic code to have diverse looking clones. Marionettes have taken the place of females; these are mechanoids similar to half-human half-machine. They are devoid of all feelings to ensure obedience. Also they are the only beings to carry out all tasks on the planet. Political issues are strong in the genre, but it cannot continue without an important factor that would make their audience care.
Human emotions play an important factor in the understanding and development of the story. What gives this theme such an imperative, strong grip is its endless boundaries that it crosses and how the audience feels related to not only the story, but the characters as well. An example of this is Dragon Ball Z. It is a series that has been on for ten years with a large fan base. The series takes the audience through the meaning of tradition and family. Each character has his or her own story that reveals how emotions tie into the story. Goku's heritage as a Saiyen comes with the values and responsibility of cultural tradition. He refuses to accept these values because of his lessons on Earth and what it means to be human. People who have immigrated to other countries are forced to make the decision of accepting their new way of life. They are confronted with conflicting views of whether or not they should take their traditions or leave them behind. This is the case with Goku, who confronts his own people who criticized him for not embracing his Saiyen heritage. In their eyes he is weak and feeble. The desire of family is also present in the series. Every character in the show has siblings, parents, or offspring. All of them play an essential role that makes their better half act out in one way or another for the sake of love.