Motifs like a "Schrödinger’s cat" that is never seen and a well from Jong-su’s childhood that may not exist challenge the viewer’s trust in the protagonist's perspective.
The film's strength lies in its pervasive ambiguity, where the line between reality and fiction is constantly blurred.
Set in modern-day South Korea, Burning follows Lee Jong-su, an aspiring writer living on a run-down farm near the North Korean border. The film is less a traditional mystery and more a slow-burn exploration of the "Great Hunger"—the search for life's meaning—amidst a backdrop of stark class inequality and toxic masculinity.
The plot centers on the disappearance of Shin Hae-mi, a childhood friend of Jong-su. Her absence becomes the film's central mystery, but director Lee Chang-dong intentionally leaves her fate unconfirmed.
The ending is famously open to interpretation. It may be a literal act of revenge, or it may be the conclusion of the novel Jong-su is finally shown writing at his desk.