The TV show also told the story of the year 2005. We learn that the Transformers were once robot slaves who had to work for aliens called Quintessons. The Autobots did not like being slaves, so they chased the Quintessons away from Cybertron. Kids liked Optimus Prime and were sad that he died, so the writers made a story in which he came back to life. In Japan, the TV show continued with new cartoons that were not seen in America.