The part you “don’t get” has to do with the massive revelation that “L’Angle du Hasard” is a cover for a sinister underground. Up until this point “Les 13″ is simply an idea that several of the characters toyued with at some point in the past. But what arah and Pauline/Emily are up to is very much in earnest, as are Renaud’ dealings which lead to Frederique’s death (a sequence not included in any form in “Out 1: Spectre.”)