In the neon-drenched underbelly of Singapore, a secret high-stakes UNO tournament draws the world’s sharpest minds and coldest hearts. For Lin Yue (Chou Tzu Yu), a quiet but brilliant Taiwanese player, entry into the game isn’t about money—it’s about uncovering the truth behind her cousin’s mysterious disappearance years ago. Across the table sits Saejima Reiko (KAZUHA), Japan’s reigning UNO queen, a woman whose icy demeanor and strategic brilliance mirror Lin’s own—and whose past may hold the answers Lin seeks. As the tournament unfolds inside lavish clubs and shadowy backrooms, alliances shift, minds unravel, and every card played becomes a step closer to truth or destruction. In this deadly game of deception, the rules are clear: trust no one, and never show your final card. A grounded psychological thriller from director Brian Tanner, UNO explores obsession, identity, and how far one will go to win—when winning means everything.