Song Kang-ho
In 2006, a slow-witted man named Park Gang-du (Song Kang-ho) runs a small snack bar in a park near the river with his father, Hee-bong (Byun Hee-bong). Other family members are Gang-du's daughter, Hyun-seo (Go Ah-sung); his sister Nam-joo (Bae Doona), a national medalist archer; and his brother, Nam-il (Park Hae-il), an alcoholic college graduate and former political activist.