Sandcastle - S3.E33

Joan visits her old aunt's fishing village in hopes of imparting the knowledge she acquired as a teacher. She encounters Sendong, whose mental condition never deterred him from being a loving man. Sendong's kindness, however, makes him the helpless target of cruel people, including his own mother. As Joan becomes deeply attached to Sendong, she realizes that this mentally ill man is bound to become her greatest teacher.