Failing debt collector San is sent to Artit Island to recover millions, or he risks losing his partner and job.

San tracks down a silent debtor on the island, while boxers Sing and Mangorn clash back in the city.

Stranded in the dark with a dead phone, San must navigate the island alone as his friends handle debt in Bangkok.

San finds strange tools in a mountain house, while old friends on the island begin discussing his presence.

Mek suspects Tai is hiding secrets, while Artit handcuffs San and forces him to work on the coconut beach.

Living together triggers Artit’s memories, but tension peaks when San’s father arrives to confront him.