Create a 30-second ultra-realistic cinematic sci-fi horror-thriller short film set inside a high-security underground biological research facility. The sequence begins with an immediate, violent hook at full speed. No slow motion until the designated moments. Maximum dynamic camera variety, grounded practical-effects filmmaking, realistic human reactions, and physical creature interaction. The horror must feel tangible, disturbing, and believable, like a premium theatrical sci-fi horror film. SETTING A massive underground research laboratory with reinforced glass chambers, steel walkways, industrial machinery, specimen containers, computer terminals, cables, and flickering fluorescent lights. Four scientists in protective laboratory clothing work around a sealed experimental chamber. A strange, dark, semi-transparent biological organism is suspended inside a cylindrical containment tank. Its surface shifts like living smoke trapped beneath liquid glass. Natural diegetic sound and an intense suspense score begin immediately. SEQUENCE — 30 SECONDS [0–1s] — THE BREACH Extreme close-up, real-time. A containment chamber's pressure gauge suddenly spikes into the red. The thick glass fractures with a violent explosive crack. Black translucent biological material bursts through the opening, spraying across nearby equipment. The camera jolts from the impact. [1–2s] — SOMETHING ALIVE Low-angle floor-level tracking shot racing alongside the spreading organism. The dark substance flows unnaturally against gravity, climbing a steel table leg while tendril-like structures snap outward at frightening speed. Electrical sparks flash in the background. [2–3s] — FIRST CONTACT Whip-pan to a scientist turning toward the noise. A thin black tendril shoots across the frame and wraps around his protective sleeve. His eyes widen. He attempts to pull away as the creature rapidly spreads across his arm. [3–4s] — THE TAKEOVER Overhead shot. The organism races across the scientist's body, forming a dark, translucent membrane over his protective clothing. He stumbles backward into a specimen table, knocking equipment onto the floor. Other scientists begin screaming and retreating. [4–5s] — PRACTICAL HORROR Extreme close-up of the scientist's gloved hand. The material pulses beneath the glove, the fabric stretches, and the fingers lock into a rigid, unnatural position. The creature pulls him violently out of frame. Avoid excessive graphic gore; emphasize physical transformation, sound, and terror. [5–6s] — PANIC Wide handheld shot pulling backward quickly. The remaining three scientists scatter through the laboratory. One knocks over a metal cart, another slams a security door, and the third grabs a portable industrial lamp. Red emergency lights activate. [6–7s] — IT DIVIDES Fast side-tracking shot. The organism splits into several narrow, rapidly moving tendrils that travel across the floor and up the walls. The camera follows one tendril as it disappears beneath a steel workstation. [7–8s] — SECOND ATTACK Low-angle shot from behind laboratory equipment. A tendril launches forward and catches a fleeing scientist around the ankle. He falls hard onto the floor, his ID badge skidding across the tiles. The camera shakes with the impact. [8–9s] — THE SCREAM Close-up of his face as the lights flicker. A dark membrane climbs toward his shoulder while he reaches desperately toward the others. The camera abruptly cuts away at the peak of his scream, leaving his fate unclear. [9–10s] — RUN Handheld chase-cam following the two remaining scientists sprinting through a narrow corridor between containment stations. Alarms blare. One glances over her shoulder as the organism crawls rapidly across the ceiling behind them. [10–11s] — THE COUNTERMEASURE Quick cut. The lead scientist tears open an emergency equipment cabinet and grabs a high-powered ultraviolet sterilization unit. Her hands shake as she activates it. The device emits a harsh electrical whine. [11–12s] — FIRST STRIKE Extreme close-up of the UV emitter igniting. She swings it toward the approaching organism and fires a concentrated ultraviolet beam. The beam illuminates the creature's translucent structure, revealing rapidly moving internal tendrils. [12–13s] — SLOW MOTION INSERT Slow motion reserved for this moment only. The organism recoils from the ultraviolet beam, its surface bubbling and contracting as its tendrils pull away from the light. Tiny particles burn away in the air. Make the practical effects tactile and realistic, not cartoonish. [13–14s] — THE TRAP Wide shot, real-time. The second surviving scientist rushes to a heavy industrial isolation gate and begins lowering it manually. The lead scientist maintains the UV beam while the creature surges toward them from multiple directions. [14–15s] — SURROUNDING THREAT Dynamic 360-degree tracking shot around the two scientists. The organism climbs the walls and stretches across the ceiling, attempting to bypass the gate. Their faces show exhaustion, fear, and intense concentration. [15–16s] — A RISKY DECISION Tight close-up on the lead scientist's face. She notices a pressurized cryogenic coolant line connected to the containment system. She looks at her partner and points toward it. A loud metallic impact comes from behind them. [16–17s] — BREAKING THE LINE Fast side-angle shot. The second scientist strikes the coolant valve with a heavy steel tool. The pipe ruptures, releasing a powerful cloud of freezing vapor across the corridor. Frost rapidly spreads over the nearby metal surfaces. [17–18s] — THE CREATURE FREEZES Overhead shot. The organism's tendrils stiffen as the freezing vapor surrounds it. Its movement becomes erratic and sluggish. The scientists retreat behind the partially lowered isolation gate. [18–19s] — FINAL SURGE Dynamic low-angle shot. The creature suddenly launches one last elongated tendril
This clip was generated with Seedance 2.5 by ByteDance. The prompt on this page is the exact text used to create it.
The example was generated with Seedance 2.5 using: 16:9 · 0:30 · Cinematic · Sci-Fi · Horror. Reusing these settings gives the closest match.
Copy the prompt as-is first, then change the subject while keeping the camera, motion, and lighting terms. Video models are sensitive to wording, so expect a few runs.
Yes. Prompts work best as starting points — swap scenes, adjust pacing terms, or change the aspect ratio to fit your project.