A prequel manga to the TV anime "Plastic Memories", written from Michiru's perspective. Naturally, also featuring her partner, Zack! A future world in which Giftia, androids capable of feeling emotion, exist. However, Giftia have a predetermined service life of about nine years, and must be 'retrieved' when that time is up. Michiru has just joined Terminal Service, the department at SAI Corp. in charge of executing these retrievals, which can be said to mean ripping apart the relationship between Giftia and owner.