A woman wakes in a cryogenic chamber with no recollection of how she got there, and must find a way out before running out of air.

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.