The main plotline concerns retired Mr Ueno, who since a child has been cared for by his late parentsÔÇÖ robot maid ÔÇÿMariaÔÇÖ ÔÇô a lifelike humanoid in a maidÔÇÖs outfit! Over the years, Ueno has developed an unconsummated love for Maria, but although she has not ÔÇÿagedÔÇÖ as such, she is now classed as an obsolete model and Ueno is finding it difficult replacing her fading batteryÔǪ The secondary plotline involves Detective Yuri Akagi, who is investigating a series of rapes, which she believes may be being committed by a rogue droid.
