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.
An entertainment tower that provides 
all kinds of thrills and information!
برج ترفيهٍ يوفّر مختلف أشكال
!الإثارة والمعلومات
Ein Entertainment-Turm, der alles
an Wissen und Unterhaltung enthält!
Una torre de entretenimiento que reúne
toda la diversión y sabiduría.
Una torre de entretenimiento que reúne
toda la diversión y sabiduría.
Une tour de divertissement
comprenant tous les plaisirs du monde !
La torre dell'intrattenimento 
ricca di gioia e saggezza!
Uma torre de entretenimento que oferece
todos os tipos de emoções e informações!
Башня развлечений, предлагающая
все виды острых ощущений!