Overflowing Drink, Silent Threat

Image1 = Woman holding gun from behind; Image2 = Woman receiving drink in foreground. Strictly maintain consistency in the two characters' faces, hairstyles, clothing, and identities; do not swap them.  
Generate a 20-second, 16:9, real-life movie footage, one-take, no BGM crime suspense dark humor short film.  

Modern cool gray indoor beverage area, silver beverage dispenser, cool white ceiling lights. Camera fixed at close-range low-angle slightly forward from the side of the beverage dispenser, about waist-chest height, 35–50mm, medium close-up, shallow depth of field, basically no movement.  

0–4s  
Character B from Image2 approaches the beverage dispenser cautiously, movements restrained and natural, only briefly alert and observing once, neutral expression, no smiling.  

4–7s  
She places a transparent plastic cup under the beverage outlet, only using peripheral vision to confirm the side rear once, then focuses on the cup.  
7–12s  
Orange-yellow beverage flows into the cup and gradually fills it; the machine doesn't stop in time. The beverage must realistically overflow the cup rim → flow down the cup wall → run over fingers → drip and splash onto the metal tray.  
B only slightly furrows her brow, purses her lips, tightens her fingers, with less than 1 second of an "oh no" reaction, not exaggerated.  

12–14s | Key Reversal  
The camera does not seek out the danger.  
A black handgun slowly enters the original frame first from B's right rear, muzzle approaching the side rear of her head; at this point, Character A should not fully appear immediately.  
After B notices: Her gaze first freezes → extremely subtly confirms to the right rear → expression instantly calms, body freezes.  
No wide eyes, open mouth, screaming, or sudden head turn.  

14–17s  
B maintains her orientation toward the beverage dispenser, very slowly stops handling the cup and gradually raises her hands.  
Camera position unchanged, begin one natural cinematic rack focus: Foreground B gradually goes out of focus, right rear A gradually comes into focus.  
17–20s  
Image1 Character A becomes the clear subject: Black long straight hair, gold long earrings, black one-piece swimsuit, single-handedly steady hold on the gun, expression completely calm and neutral, no smirking, no menacing face.  
She looks at B and says in a low, calm, serious tone as if in ordinary conversation:  

"You know too much."  
B continues raising her hands, doesn't turn back, doesn't respond, only shows an extremely subtle gaze pause.  
The dialogue ends on the final word, and the frame immediately cuts.  

Performance Principles:  
B: Restrained alertness → High focus → Brief hesitation → Instant freeze. The greater the danger, the less the performance.  
A: Always calm, steady, neutral; threat comes from the gun-holding action, not the expression.  
**Sound:** Only realistic diegetic sounds: Footsteps, plastic cup, beverage machine, liquid flow and overflow, metal tray splatter, fabric rustle, final Chinese dialogue. No music, no horror sound effects, no chambering sound.