Afterwater is a three-part film spanning fiction, documentary and experimental film aiming to study and compare lakes across the world and their hidden treasures: submerged settlements, failed utopias and collective dreams, the remains of past eras and the seeds of a hopeful future.
Dongsoo leads a solitary life, spending his time uploading music to the internet. His ordinary life is upended when he is kidnapped by an organ hunter, who takes out one of his eyes. Soon, Dongsoo is sharing the vision of someone who got his eye. Through the connected vision, he learns that the taker is a notorious serial killer, and pursues the murderer to get his eye back.
A boy falls to his death at school, but Ok Chanmi does not believe that her twin brother, Park Wonseok, committed suicide. Chanmi transfers to her brother's school, Yongtan High, and meets Ji Sooheon, who witnessed her brother's death.