Contract Marriage:married my ex fiance's brother

Merilyn caught her fiance Ivan of seven years having sex with her step sister Eulalie who was engaged to his elder brother Liam.Merilyn was shattered.

Then the cold and aloof Liam made her a deal "Be my wife for a year and give them a taste of their own medicine since they will have to call you sister in law and respect you as the eldest daughter in law of the Wilsons"he said.Merilyn in a state of anger agreed and they registered the marriage.Will they abide by the one year contract to get back at the people who betrayed them or will love's happening change their plans?