En is an 18-year-old who has lost his father to cancer years ago. While waiting for his enlistment into the army, he has to put up at his grandparents’ place as his mother goes on a holiday with a new man in her life.

As En soon finds out at his grandparents’ place, life cannot be put on hold indefinitely. He gets more and more involved with his grandparents’ lives – the routines his grandfather builds around his grandmother’s dementia and which his grandfather fears are no longer sufficient to support her worsening condition. At his grandparents’ place, En also discovers that there may be more to his father’s student activist past than his mother lets on and is determined to get to the bottom of the matter.

As his family is drawn together in a sudden tragedy, En has to decide where his loyalty lies and stand up for what he believes in. But in a country where ideologies are forged on constantly shifting sands, he finds himself struggling to stay true to what he knows to be right. And in a family that prefers to forget, the sandcastles of everything he holds dear seem doomed to be washed away by the tides of time.