Emmanuelle (Noémie Merlant), a single corporate inspector for a luxury hotel chain, travels alone to Hong Kong to evaluate the high-end Rosefield Palace hotel managed by Margot (Naomi Watts). Detached from her own feelings of pleasure and intimacy, Emmanuelle embarks on an exploratory quest across the city's erotic underground and hotel corridors—ranging from casual encounters with strangers to a sensory connection with a local escort, Zelda (Chacha Huang). During her stay, she becomes fixated on Kei (Will Sharpe), an elusive and emotionally withdrawn hotel guest who resists her advances. Through their psychological cat-and-mouse dynamic, Emmanuelle learns to reclaim her internal desire on her own terms.