One day, a girl named Ao Gennai receives a package containing a small robot girl named Gourai. Revealing herself to be a Frame Arm Girl installed with an artificial intelligence, Gourai explains how she was sent to Ao to gather data on emotions. Two more F.A. Girls named Stylet and Baselord soon appear, with Stylet challenging Gourai to a Sessions Battle. Although Stylet initially gets the upper hand with her flight ability, Gourai manages to use her own skills to win the match.