通过指挥Martlet交响乐团Chiaki人气的急剧提升，感觉到两人差距愈加拉大的Nodame倍感沮丧。虽未获得 Auclair老师的许可，她仍决定独自参加比赛。

Chiaki搬离公寓的决定让Nodame更加沮丧，同时Rui全力劝说 Auclair老师为她授课，但他似乎对教授Nodame更感兴趣。在聆听了Nodame的流畅演奏后，她开始对自己产生怀疑。

得到Chiaki的鼓励后，Rui决定继续钢琴事业，并得以参加一场特殊音乐会。Stresseman因朋友之死而倍感沮丧，而Chiaki在去参加Nodame演奏会途中偶遇Sebastiano Vieira，并更改主意决定与他一起。

Tanya starts to feel jealousy when Kuroki is asked to take care of a young japanese girl who is trying to enter the conservatoire. While trying to get closer to him, she starts to wonder about her own future as she is near her graduation.

Tanya and Yu Long have poor performances at the competitions they took part, and thus they will be forced to return to their respective countries after graduation. While trying to cheer Tanya up, Kuroki ends up making a surprising proposal to her. Meanwhile, Nodame hears a piece of music that draws her attention. She hopes to play it along Chiaki someday, unaware that it's the same piece that will be featured at Chiaki and Rui's concert.

Nodame finds that Chiaki has hidden from her the connection between the piece and his concert with Rui and she can't hide from him her dissatisfaction for not telling her sooner. After looking at how much difficult pieces Nodame is studying with her teacher, Chiaki cancels an important trip to Italy just to lend a hand to her.

Chiaki helps Rui for their concerto. When Nodame found out, she feels betrayed, and uses that feeling to help her master a piece. Pieces featured: Paris Symphony by Mozart, Third Movement of Piano Sonata No. 31 by Beethoven

After Chiaki and Rui's concerto, Nodame and Chiaki spend the night together and she proposes to him in the following morning, just to be rejected by him. However, Chiaki starts to wonder about how serious she was at that time, and Stresseman pays a visit to her. Pieces featured: Piano Concerto in G major by Maurice Ravel and Third Movement of Piano Sonata No. 31 by Beethoven

Nodame has been absent from school and Chiaki starts looking desperately for her, just to find that she was rehearsing for a concerto with Stresseman in London. Pieces featured: Piano Concerto No. 1 in E minor, Op. 11 by Chopin

Nodame与Stresseman一同演奏的协奏曲在世界范围内大获成功。然而她却放弃了演奏事业，从众人视野中消失。同时，Chiaki终于开始正视自己对Nodame的感情。

回到巴黎后，Nodame整日沉浸在为孩子们的弹奏中，她的朋友们纷纷猜测Nodame是否会继续学业与演奏事业。决心将Nodame带回正轨的Chiaki要求她与自己一起弹奏初见时的那首钢琴曲。