There is no definite structure or formula for the show that we can really pinpoint since it really aims to present a not too predictable treatment and predictability is precisely what we want to avoid. Writers are actually encouraged to have a more free-flowing attitude towards every story given to them. However, the fear that it might fail to establish its own look and identity that will set it apart from other shows is not really a problem. Its being a docu-drama is enough to stand as its unique selling point.