♡beAt! -After the Summer-

A small entertainment agency in Tokyo, Yotsuba Productions, 428 Pro for short. It is a place where various idols play an active part and shine. Mainly on the idol unit ♡ beAt (heartbeat), the name of 428 has been spread in various places since its debut.

However, due to a certain incident, ♡ beAt was dissolved.

This is the story of the end of the summer when the girls spread their wings to fly into their respective skies.