"Yes!" Aki responds nervously. Futomaki shows her two dance moves, and then asks, "Which one is good?" Aki: "Eh?" He shows it again. "Which one do you like?" Aki is speechless, wondering if he was testing her. 'Is he trying to see if I have potential as an Idol? Yui-chan, please tell me what to do!" Futomaki finally says, "Well, either one is okay (giggles)." He goes back to dancing. But Aki goes over and shows him instead a rather awkward, stiff dance step she came up with. "I think this one is good." He looks at her silently, so she repeats it again. But Futomaki, holds his chin, and just stares at her, still not saying a word. 'Shoot! I made him mad!"
Just then, a lovely tall girl from up the stairs, greets them a good morning. "Jeh!" Aki looks at the girl who's wearing a silver show costume and descending the spiral staircase like a some outer space goddess. 'So pr-pretty! And she has long legs!' Futomaki calls her by her pet name. "Mamerin, starting today we will change the step in the B Melo(1)." He proceeds to teach her the new step. Aki is surprised to see that it was the dance step she had shown earlier to him
思いがけず社長の太巻（古田新太）に出会ったアキ（能年玲奈）は、人気グループ「アメ横女学園」のセンター・有馬めぐ（足立梨花）のシャドウ（代役）に抜てきされる。帰宅後、上京する際に春子（小泉今日子）から手紙を渡されていたことを思い出し、読み始めるアキ。そこには思いがけない母の過去がつづられていた。２５年前、アイドルを目指してオーディション番組に出場した若き日の春子（有村架純）は…。
