A stage performance is underway, featuring a dance routine by six people in matching outfits – light green shirts and light gray pants. They are illuminated by spotlights on a stage adorned with backdrop screens. One screen displays the title "A Chorus Line" next to a vintage poster for the same show. The lighting alternates between bright white and vibrant orange. The audience sits in darkness, silhouetted against the stage's light. The dancers are in motion, performing the dance while the audience watches the show.