Common Sense Note
Parents need to know that creature-feature loving teens will want to see this movie, subtitles or no. If they go, they'll see plenty of scenes of the half-fish, half-reptile monster chasing, attacking, eating, and ripping up its human victims (its lair is filled with corpses and bones). In fact, the CGI-heavy violence is so excessive that it ends up being somewhat comedic. Humans use a variety of weapons against the monster (and each other), including guns, arrows (some flaming), and gas. The government lies about a virus and then assaults demonstrators with a toxic gas called "Agent Yellow." Some mourning scenes show characters crying over lost loved ones. Subtitled swearing includes multiple uses of "f--k" and plenty more salty language.
Brief reference to an ex-wife who "popped out the baby and ran off" brief shot of girls' legs under a table.
Multiple attacks by monster. It chases, terrifies, eats/chomps, throws/drops, and dismembers human victims; dog attacks owner; suspected infection victims are dragged off in plastic bags (resembling body bags); humans fight monster and each other with guns; brief scene shows brain surgery (some cutting and drilling); Nam-joo shoots monster with arrows; homeless man pours gasoline on monster so flaming arrow can light it on fire; children confront monster in sewer (dark shadows, tense moments, brave kids); memorial services and mourning; sad scene showing a child's death.
In subtitles: several uses of "f--k," plus other language ("s--t," "god damn," "bastard," and "bitch"), as well as "Jesus Christ."
The central family counters the officials' deceit and oppression with displays of courage, loyalty, and intelligence; homeless kids and man are brave in the face of danger.
Drugs / Tobacco /
Homeless man is drunk on soju (Korean rice-based alcoholic beverage).