Off's live stream has caused the death of a mother and her daughter. His reputation is ruined as well. He ask his friend, Boat, together they create a channel called "After Dark".

Off and Boat, explore an abandoned four-story building. Off realizes that there is something even scarier.

Off and Boat have decided to go to an abandoned asylum. As the darkest secret of the asylum reveals, they encounter an accident that has never happened to any show before.

Chai begins to develop a strange relationship with the mysterious woman, which later forces him to choose between friend or love.

After an exploration in "Katkasu" everyone realizes that the real intention for "After Dark" is not about finding the truth. The revelation unveils when they meet Dao, who holds the key that leads everyone towards an unexpected conclusion of the story.