The film depicts scenes full of estrangement and unease, set in the spaces of an abandoned ethnographic museum located in a zoo. A group of people, who seem to be museum staff, circulate inside the museum exposed to external stimuli and situations that occur randomly, fleetingly, sometimes simultaneously throughout the building. These new employees (guard, cleaner, director, archivist) are operators who perform a simple series of tasks: imitating, repeating or modifying the situations they may encounter. It is a constrained context in which there is no script, it is a process that emerges and develops unpredictably. The Host and the Cloud (2h 1’30”) is a ritual of separation, a journey into the mind of an absent subject, where the avatar of the mysterious host is represented by a 3D-animated white rabbit that wanders through the film and is present as an invisible trace in the course of the experiment.