4 clans of saton is about a boy named Jesse who is the son of the main family. His generation is where the masters of his clan can be reincarnated. So him and his friends will go through trial to see which of the masters they are they vessel for. Then they will go through the roughest part of the trial to be determined which of the will be leader, vice leader, strategist, And assistant of the families. But there is danger that is coming there way that they do not know about and how will they face it.