Decision to Leave

Busan detective Hae-jun investigates the mountain death of an immigration worker and repeatedly interviews his Chinese widow, Seo-rae. Surveillance, translation, and their growing fascination complicate his effort to decide whether the death was accidental.

Phones, smartwatches, binoculars, mountain and sea imagery, translated speech, and impossible-feeling visual transitions place Hae-jun inside his own surveillance—Tang Wei and Park Hae-il make concealment and attention forms of intimacy.