Taemin has lost his father and Key has lost her husband. What used to be a perfect *three* had turned the remaining two against one another. It was a story long passed but it was the story that piled brick after brick on the rising strong and solid wall between a mother and her son. One avoids the other by going through their routines as if they lead a soliditary life. The mother works all day long in her office, hardly coming home to cook a decent meal. The son goes to school and soent all his time sleeping or dancing the hours off. The truth is, the both of them knew what happened and how it had happened but it was too late. It was too late for forgiveness. It was too late to put things to where they belong. The wall that had been building for twelve years was just too tall and strong to collapse anymore. They can no longer see one another on either side of the wall. But what if something happens out of the ordinary and they were both thrown into a situation none of them were prepared for? Will that be the time for forgiveness? Will they then say "I Forgive You.."?