Cobalt, Chrom, Kei, and Neon are androids living together in an abandoned house. In order to pay off a huge electrical bill, the four decide to compete for prize money at the Babel entertainment tower. After their first performance, they meet Esora, a boy struggling with the recent loss of his father. The encounter activates a special program within the four androids.
Human memory apparently weakens 
over time and eventually disappears.
عادةً ما تضعف ذكريات البشر
بمرور الوقت، وتزول بنهاية المطاف
Erinnerungen werden bei Menschen
schwächer oder verschwinden.
Los recuerdos humanos se desvanecen
con el tiempo y se pierden.
Los recuerdos humanos se desvanecen
con el tiempo y se pierden.
J’ai lu que la mémoire humaine
s’estompe et disparaît avec le temps.
Con il passare del tempo, i ricordi degli esseri umani 
si fanno sempre più indistinti fino a svanire.
Parece que a memória humana enfraquece
com o tempo e, eventualmente, se vai.
Воспоминания людей со временем
ослабевают, а потом исчезают.