The Great Flood on Netflix: Korean Thriller’s Shocking Twists Divide Viewers

A new South Korean film on Netflix is shocking audiences worldwide. “The Great Flood” premiered globally on September 18, 2025. The thriller stars Kim Da-mi as a scientist fighting to save her son. Their apartment building is submerged by a mysterious apocalyptic deluge.

The movie starts as a straightforward disaster survival story. It then transforms into something far more complex and unexpected. This bold narrative shift has sparked intense debate among viewers and critics alike.

A Gripping Survival Tale with a Mind-Bending Secret

The plot follows Dr. Gu An-na and her young son, Ja-in. They wake to find their high-rise apartment building rapidly flooding. An urgent phone call from a company security officer, Son Hee-jo, instructs them to reach the roof for rescue.

Their desperate climb through the crumbling building is fraught with danger. The film uses strong visual effects to create a palpable sense of urgency. According to reviews, the child’s realistic behavior adds tremendous tension to their escape.

The story takes a dramatic turn with a major second-act reveal. This twist completely recontextualizes the entire disaster. Director Kim Byung-woo moves beyond standard catastrophe film tropes. He explores deeper themes about the value of life and maternal desperation.

Visual Spectacle Meets Narrative Overload

The film’s production strengths are evident in its first half. Slick editing and great tracking shots maintain constant momentum. The visual effects depicting the raging floods are convincingly executed.

However, the final act introduces increasingly abstract concepts. The climax draws heavy inspiration from classic science fiction films. Some critics argue the explanation becomes bogged down in excessive exposition.

This has led to a split in audience reception. Some viewers appreciate the ambitious creativity and mystery. Others find the concluding sequences confusing and exhausting. The film ultimately challenges viewers with its cerebral and unconventional approach.

“The Great Flood” is a daring experiment that prioritizes big ideas over simple closure. This Netflix thriller will likely be debated for its audacious plot twists long after the credits roll.

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What is “The Great Flood” about?

It is a South Korean thriller about a scientist and her son trapped in a flooding apartment building. Their fight for survival uncovers a shocking secret behind the disaster. The film is now streaming on Netflix.

Who stars in the Netflix movie?

Kim Da-mi plays the lead role of Dr. Gu An-na. Park Hae-soo co-stars as the security officer Son Hee-jo. The young actor Kwon Eun-seong plays her son, Ja-in.

Why are viewers divided on this film?

Many praise its intense start and stunning visual effects. The major mid-movie plot twist, however, makes the story very complex. Some feel the ending becomes too convoluted and hard to follow.

Who directed “The Great Flood”?

The film was directed and co-written by Kim Byung-woo. He is known for other Korean action and sci-fi projects. His direction focuses on high-concept themes alongside physical survival.

Is the movie suitable for all audiences?

Viewers should note it contains intense disaster scenes and peril. There are also sequences with gunplay and bloody violence. The complex themes may be difficult for younger audiences.