Cinematic sci-fi thriller style, high tension, slow-burn atmosphere, subtle film grain, photorealistic 8k texture, Unreal Engine 5 render. Starts medium close-up on Lieutenant Elara Vance, a athletic human woman in her early thirties with pale skin and chin-length blonde hair slicked back with sweat. She is wearing a red twok uniform with black pants with white collar and white clasp and black belt and with the uniform jacket extending below the belt, her face illuminated solely by the harsh, flickering white beam of a handheld palm beacon fastened to her wrist. She is staring into the oppressive darkness of a wet, crystalline cave formation with a look of forced composure cracking into fear. The camera slowly pushes in on her rigid jawline. She breathes out shakily, whispering the exact words "Something just moved past the thermal sensors. It was big." A slow, deliberate rack focus shifts sharply past her tense shoulder to the deep background. Standing perfectly still in the near-total darkness, his silhouette barely defined by the faint bio-luminescence of alien moss on the cavern walls, is Lieutenant Commander Kaelen, a tall, broad-shouldered Black man with a shaved head and deep-set, intense eyes, also wearing the red twok uniform. Kaelen is holding a phaser rifle aggressively at low ready, staring into the void where she was looking. He states calmly, with grim determination, the exact words "Maintain formation. We are not alone down here." High contrast lighting, deep shadows, moisture dripping audibly from ancient rock, anamorphic lens flare from the beacon light catching dust motes in the stagnant air.