Sub

A young man, deeply in debt, takes on a perilous job as a submarine crew member to escape his troubles. However, he soon discovers that the mission is far more dangerous and secretive than he was led to believe, placing him in a fight for survival.

Sub received mixed reviews from critics and audiences. While some praised its tense atmosphere and performances, others found the plot predictable and underdeveloped. The film struggled to find a wide audience, particularly outside of its native South Korea.

• Praised for its suspenseful sequences and attempts at a claustrophobic atmosphere.
• Criticized for a convoluted plot and underdeveloped character motivations.
• The film's ending was seen by some as unsatisfying.

Google audience: Information on specific Google user reviews for 'Sub (2019)' is not readily available.

The film marks one of the early leading roles for K-pop idol Hongseok, who is a member of the group Pentagon.