Science fiction genre is usually set in the future. The most common conventions that you see in this genre are futuristic vehicles and weapons, for example in Star Wars, there are things such as the death star, and weapons like lightsabers. Most science fiction films have two sides, almost like the good guys and the bad guys. A good example of this is in Star Wars again. These are the jedis and the siths, and the jedis are the good guys and the siths are the bad guys.
At the end of most science fiction genres, the leaders of the each side usually battle it out to create the final scene within the film. This happens at the end of star wars revenge of the sith when darth maul and obi wan konobi have a battle. In most cases of science fiction, the final result is usually the good side overpowering the bad side to finish the film.
