A murder rocks a South Korean town and suspicion quickly falls on a reclusive, mentally challenged -- and alibi-free -- young man (Bin Won). When an inept public defender botches the boy's case, his mother (Hye-ja Kim) sets out to prove her son's innocence. Acclaimed director Joon-ho Bong (Memories of Murder) explores the lengths a mother will go to protect her child in this atmospheric crime thriller.