The action of the youth comedy Billy and Billie season 1 takes place around the young couple and it is very difficult to name their relations standard. Billy and Billie are a stepbrother and a stepsister and their parents adopted them. From the childhood, they were in very good relations, in spite of their sex difference. But when they grew up, they started to feel something more to each other. However, they are not blood relatives; their relations can shock the relatives. They conceal their relations, but it is very difficult with times, because they are grown up and their ..