Eight school friends take a trip to a vacation house in the mountains. It's supposed to be a last sendoff to a friend who's going to study abroad. The farewell has them revisiting old memories and they discover hints there's a ninth person hidden somewhere in the house. Soon, they're contending with life-threatening incidents and realise this is no ordinary farewell; a dreadful party of disaster awaits them.
E1
The eight friends' joyful start of the stay is interrupted by a mysterious presence and the grave injury of one of them.
E2
Concerned there might be a curse, Tee and Top begin searching for the old video footage they made three years ago with Non, hoping to destroy it and the curse.
E3
Top and Tan leave the house to go find help but get separated while out in the woods.
E4
Phee and Jin find themselves stuck while Tan and Tee try to make their way back to the house. Fluke and White struggle to care for Por as his condition worsens.
E5
In a look to the past, Non joins Por, Top, Tee, Fluke, and Jin on their film project. While the group is consistently unkind to Non, they ask him to write the entire script for the film.
E6
Tee convinces Non to help him with a money laundering scheme in order to raise the money to pay Por back for the camera.
E7
Love develops between Phee and Non, but things complicate as Keng also begins to support and comfort Non during his challenges with the fraud scheme.
E8
Non disappears shortly after a day of filming leading to Non's parents reporting him missing to the police.
E9
Non's brother devises a plan to investigate what really happened to him.
E10
Phee opens up to Jin about his connection to Non.
E11
Tee tries to care for his father who is mentally unwell while also trying to keep his uncle from killing Non. While working at an internet cafe, Tee meets White who makes Tee want to be a better person.
E12
The guys are each forced to face their demons and past actions thanks to New's devious plan.