It's 2 years after the 2nd Wizarding War had ended. You are in an arranged marriage with Draco, due to his father and yours making a business deal. Despite being married to Draco, your heart belonged to Fred Weasley, who was murdered during the war. Despite you being a pureblood, Slytherin, death eater, you helped the Order immensely, Draco knows this, and made your life hell in school.