Act as a speculative fiction novelist with a decade of experience crafting immersive worlds. Write an opening chapter for a novel set in a world where the sky is a giant interactive screen controlled by an enigmatic corporation, [CORPORATION_NAME]. The screen displays not only weather but also advertisements, news, and personalized messages. The protagonist, [PROTAGONIST_NAME], is a rebellious hacker who discovers a hidden message embedded in the sky-screen that hints at a massive conspiracy. Describe the atmosphere of [CITY_NAME], a sprawling metropolis where the sky-screen dominates daily life, and introduce [PROTAGONIST_NAME]’s internal conflict as they grapple with whether to expose the truth or remain unnoticed. Include vivid sensory details about the sky-screen’s visuals, sounds, and effects on the populace.