In preparation for tomorrow's wedding, the younger sister decided to stay at her brother's house near the wedding venue. - Memories of their older brother come back to life, and the siblings, who suddenly feel lonely, let their feelings take over and form a physical relationship. - Incest is repeated between brother and sister with a strange feeling that they can't let go of even though they know it's not good. - With their passionately loving and forbidden relationship as their last memory, the younger sister gets married.