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.
But if they do the same thing over again, 
sometimes they can remember.
،لكن إن كرّروا نفس التجربة
ترجع لهم الذكريات أحياناً
Aber wenn sie das Gleiche noch mal erleben,
können sie sich erinnern!
pero si vuelven a hacer lo mismo,
las recuerdan.
pero si repiten lo que hicieron,
las recuerdan.
mais qu’ils se les remémorent
quand ils réitèrent l’expérience !
Però, se ripetono quella stessa esperienza,
Mas se eles fizerem a mesma coisa
de novo, podem se lembrar.
Но если они сделают то же, что и
в прошлом, то вспомнят!