Forgotten (2017) is a South Korean mystery thriller directed by Jang Hang-jun, featuring a gripping narrative that explores themes of memory, identity, and trauma. The story follows Jin-seok (played by Kang Ha-neul), who moves into a new home with his family, including his older brother Yoo-seok (Kim Mu-yeol). One fateful night, Jin-seok witnesses his brother's abduction, which leads to a harrowing 19-day wait for his return.