"Cats of the Louvre" is a manga that intertwines the lives of humans and cats within the iconic setting of the Louvre Museum in Paris. The narrative explores themes of art, memory, and the passage of time through a blend of reality and fantasy. The story centers around a group of cats that inhabit the museum, led by Snowbébé, a small, white cat with a mysterious connection to the art within the Louvre. Snowbébé possesses the ability to enter paintings, a power that allows the cat to traverse different worlds and eras, blurring the lines between the past and present.

The human characters include Marcel, an elderly night watchman who has spent decades working at the museum and has formed a deep bond with the cats, particularly Snowbébé. Marcel's life is marked by a tragic past involving his sister, who disappeared in the Louvre when they were children. His memories and emotions are intricately tied to the museum and its art, creating a poignant parallel to Snowbébé's own journey. Another key character is Cécile, a young museum guide who becomes involved in the lives of the cats and Marcel, serving as a bridge between the human and feline perspectives.

The plot unfolds as Snowbébé's abilities draw the cats and humans into a series of surreal and dreamlike encounters with the art and history housed within the Louvre. These experiences reveal hidden stories and emotions tied to the paintings, as well as the personal histories of the characters. The narrative delves into the idea of art as a living, breathing entity that transcends time, with the cats acting as guardians and interpreters of these timeless works. The interplay between the mundane and the magical creates a rich tapestry that explores the impact of art on human lives and the enduring connections between past and present.

The manga balances its fantastical elements with grounded, emotional storytelling, offering a unique perspective on the Louvre as both a physical space and a repository of human creativity and memory. The characters' journeys are deeply intertwined with the art they encounter, creating a narrative that is as much about the power of imagination as it is about the bonds between individuals and the worlds they inhabit.