Anna In ‘The Great Flood’: Actress Name & Character Explained

Kim Da-mi absolutely owns The Great Flood—this new Netflix Korean sci-fi disaster film that dropped on December 19, 2025—and if you’ve watched it, you know why. She plays Anna (or An-na, depending on the subs), a single mom and brilliant AI researcher thrown into nightmare mode when a massive flood hits out of nowhere. From the opening scenes of her cozy morning turning to panic as water rises, Da-mi carries the whole movie on her shoulders, and she makes it feel so real and raw that it’s hard not to get emotional right along with her.

At 30, Da-mi has this incredible range—she’s been killing it in everything from Itaewon Class (that tough, no-nonsense Park Sae-ro-yi love interest) to Our Beloved Summer (sweet and nostalgic) and even horror like The Witch series where she was downright terrifying. But here in The Great Flood, she taps into something quieter and more devastating: a mom’s fierce protectiveness mixed with crushing guilt. Anna’s not some superhuman action hero; she’s just a regular woman who’d planned to skip work that day to make breakfast for her little boy Ja-in. When the apartment starts flooding, Da-mi’s face says it all—shock, terror, determination. Those early scenes running through hallways with Ja-in on her back, water chasing them? Tense as hell, and Da-mi sells every breathless moment.

The film’s big twist hits hard (no spoilers if you haven’t seen), but Da-mi’s performance elevates it. As secrets about her work at the Darwin Center unravel—developing this “Emotion Engine” for artificial humans—Anna grapples with choices no parent should face. Da-mi layers in the regret beautifully: subtle glances, trembling hands, voice cracking when she thinks she’s failing Ja-in. The simulation loops (yeah, it goes there) give her room to show evolution—starting desperate and selfish, slowly becoming more empathetic, helping strangers she ignored before. It’s exhausting to watch in the best way; you feel her growth loop by loop.

Off-screen, Da-mi’s talked about how personal this felt—drawing from real fears about parenthood and loss. She’s private, but you see her commitment: soaked for hours in those water tanks, carrying young co-star Kwon Eun-seong through takes. Their chemistry is magic—Ja-in’s adorableness bounces off her protectiveness perfectly. Da-mi makes you believe this bond, even with the sci-fi revelations.

The flooded apartment setting keeps things claustrophobic, and Da-mi thrives in close-ups—eyes wide with fear one minute, steely resolve the next. When Anna confronts Hee-jo (Park Hae-soo solid as always) or whispers that crucial line to Ja-in, it’s all her. No overacting; just honest emotion.

The Great Flood isn’t perfect—pacing dips mid-loops, effects are good but not groundbreaking—but Da-mi anchors it. She’s why the themes of love transcending everything land. If you’re a fan from her dramas, this is her stepping into lead film territory with power. Worth watching for her alone. That reunion scene? Tissues ready. She’s the reason this one’s sticking with me days later.