The world is a perplexing, peaceful mystery to Amélie until a miraculous encounter with chocolate ignites her wild sense of curiosity. As she develops a deep attachment to her family's housekeeper, Nishio-san, Amélie discovers the wonders of nature as well as the emotional truths hidden beneath the surface of her family's idyllic life as foreigners in post-war Japan.

When the Paris police's vice squad - on the orders of Police Chief Lépine - begin to clean prostitutes off the city's streets, a man's body is found in the Bois de Boulogne. Inspector Antoine Jouin is entrusted with the investigation.