Suzie, an American woman living in Kyoto, Japan, whose life is upended when her husband and son disappear in a mysterious plane crash. As "consolation" she's given , one of a new class of domestic robots made by her husband's electronics company. Though at first Suzie resents 's attempts to fill the void in her life, gradually they develop an unexpected friendship, as together they uncover the dark truth of what really happened to Suzie's family, becoming dangerously enmeshed in a world Suzie never knew existed.