It's been two years since the two of them met, and now they've both lost half of their memories. They've been married for six months, and they got engaged six months ago. Six months ago, they were engaged, and the day after the wedding, they got into a car accident, which caused them to lose all of their memory. The doctor told them that part of their amnesia is "selective amnesia" , which means that they'll automatically erase bad memories. If they can remember what happened before they met, then maybe they can get their memories back. They can't, but they're determined to get through it together.