Marion Cotillard, whose character is unnamed in the film, enters her Shanghai hotel room late at night. The corridor is alive with the ghostly echo of a 1920s tango that appears to spill from a vintage record player in the corner. She flicks off the music, and in a sudden puff of smoke an expensive Dior bag materializes in the room, as if conjured by an unseen hand. The moment is dreamlike and disorienting, and the air in the room feels thick with unanswered questions.
In a state of panic, she dials the front desk and insists that someone has entered her room. Two security guards sweep the space from wall to wall, but they find nothing out of place and no intruder. They press her about the bag, asking if it could have been left by someone she knows. At first she claims she has just arrived in Shanghai and knows no one, but the memory she is compelled to revisit begins to unfold. Through a flashback triggered by the earlier, quieter moments of the day—when she visited the Shanghai Oriental Pearl Tower—she sees a version of the city that feels almost like another era.
The vision takes her back to a time when Shanghai breathes differently, and she finds herself climbing stairs toward a private room where a Chinese man named Yu stands waiting. The moment they meet is intimate and charged; they kiss and confess a deep love that feels both urgent and impossible. The scene shifts abruptly to the present, where Yu expresses a desire to stay with her, but he cannot. The emotional weight of the vision lingers, as if memory itself is slipping between two states of time.
As the memory fades, Yu hands her a blue rose, a motif that recurs in the shifting images and emotions she experiences. The flashback ends with Cotillard's character in tears, the blue rose now resting in the Dior bag she had just discovered. The present tense returns, and she opens the bag to reveal the flower once more, clutching it to her heart as if safeguarding a fragile remnant of a love that might have been.
The final image is quiet and unresolved, leaving the viewer with a sense of longing that bridges past and present. The sequence blends memory, dream, and reality in a way that feels both intimate and elusive, inviting reflection on how moments of connection can haunt a person long after they seem to end. Overall, the film crafts a delicate, melancholic mood that lingers well after the room goes quiet, turning a single night in Shanghai into a meditation on time, memory, and the power of a single blue rose. The mood is reflective, and the story remains faithful to its core, offering a haunting look at desire, loss, and the costs of what could not be kept.