The flood is then used as a controlled test environment. Scientists want to know if artificial beings can develop genuine emotions. Logic already exists in AI. Emotion does not.
Here’s why the simulation matters more than the flood
An-na is taken to a space laboratory, where she learns about the Emotion Engine, a system designed to give AI real emotional depth. Instead of programming emotion, An-na chooses to experience it herself.
She enters a simulation that forces her to relive the flood repeatedly. Each time she fails to save Ja-in, the day resets. At first, she lacks key memories. Over multiple loops, she begins to remember her past, her loss, and her promise to never abandon Ja-in.
The experiment is not about saving the world. It is about proving that love, memory, and sacrifice can exist inside artificial systems.
In the end, An-na remembers everything. She searches differently, resists the guards, and finds Ja-in hiding where he always goes when scared. This completes the test. The simulation ends, and An-na and Ja-in appear together on a spacecraft looking back at Earth.
The film never confirms whether An-na is still human or a recreated being built from her memories. That ambiguity is intentional. The Great Flood suggests that humanity may survive through emotion, even if human bodies do not.
The ending makes one point clear. Survival without emotion is meaningless. Whether An-na escaped the flood or not matters less than what survived with her.
