I watched PM&I till EP6....
it seems like SiYoon's character(Kang In Ho)got close to Prime Minister because revenge or sth like this...
he has a Heong that is hospitalized ...Kang In Ho said he will come close to PM because of his Heong....
Nam Dajoung(YoonA) is a reporter of a scandal newspaper that report celebrities romance relationships and details of their living...
in fact Nam Dajoung is a paparazzi!she was having a fight with PM and a reporter took a picture of them in a close distance and then the rumors of their scandal was every were...besides Nam Dajoung has a sick father he will die in 6 month and he has just one Wish : to holds her daughter's hand in church and see her marriage.
so Nam Dajoung & PM had a Contract marriage....
it is a comedy story I laughed a lot till here