In a world where memories are stored in a giant library of memories, a girl accidentally loses all her memories. Unable to remember who she is and why she is there, she must journey into the depths of the library to look for answers.

 

Through her journey, she interacts with other people's memories and discovers the origins of the library as well as mysterious clues of what could be a conspiracy behind her own past, the link between her and the library and the real reason her memories have been lost.