In a futuristic Japan where androids are commonplace but treated as inferior to humans, high school student Rikuo Sakisaka becomes intrigued when his house android, Sammy, starts acting independently. Following her secret outings, Rikuo discovers a cafe called Time of Eve, where humans and androids coexist without prejudice. As he delves into Sammy's mysterious behavior, Rikuo confronts societal norms and reconsiders the true nature of human-android relationships.