[Base] Clear blue-green underwater space, six adult dancers as high-precision 3D rendered characters, arranged in three layers: center lead dancer in deep cyan long sleeves, two in front with short silver poles, three in back with translucent ribbons. Volumetric light, fabric, bubbles, and skin textures are realistic; ribbons moving through water add 2D hand-painted green ink effects with dry-brush edges and scattered ink lines like underwater paper paintings, without flattening the 3D characters. [Action/Dance Mode Addition] Group dance must have layers: lead dancer handles the main melody, front duo handles mirrored movements, back trio forms arches and reverse ripples with ribbons; ribbon passing must be sequential, not cloned synchronization. [Rhythm Control Enforcement] Every 2 seconds clearly define at least three sets of character movements and two directions; use water flow, bubbles, ribbons, and light beams as feedback. [Opening Setup] Start with front silver poles slicing water, then move through ribbon arches to see the lead; back row has a 0.2s delay in wrist raising. [Core Narrative] 0-2s: Lead dancer rises and rotates wrist, front duo crosses poles, back trio releases ribbons; bubbles rise, ribbons form asymmetric arch. 2-4s: Lead dancer flips right, front duo moves up/down, back trio passes through arch; flow pulls ribbons into progressive waves. 4-6s: Lead expands arms to chest, front duo rotates poles oppositely, two in back raise ribbons while one crosses low; light beams cut into segments. 6-8s: Lead advances to camera, front duo retreats diagonally, back ribbons fall and are caught by wrists; bubble trails form, distinct spatial layering. 8-10s: Lead rotates low, front duo crosses briefly then separates, back trio moves at different speeds, ribbons loop three times. 10-12s: Lead spirals upward, front poles point outward, back row releases ribbon ends asynchronously; ribbons, bubbles, and light rise as the formation opens from arch to fan. [Camera Logic] Open with front details; see lead through ribbons; 2-4s lateral pan; 4-6s wide shot showing three layers; 6-8s push toward lead; 8-10s top-down circular view; 10-12s low-angle pull away. [Details] Volumetric beams, realistic 3D textures; 2D green ink ribbon trails with wet-on-wet blurring and paper texture; light but opaque clothing; character differences in height, skin, and props; no brands/text. [Audio] No dialogue; underwater bass drums, soft metal bells, bubbles, and ribbon friction form the beat.