Here's the official translated summaries for EX episode 2. Since this is a continuation from the last part I'll put them in spoilers.
Haruka
After receiving a fan letter, Haruka begins doing country wide events. While being in contact with various fans' directly, Haruka realizes new ways to deliver her personal song "Suteki Happiness".
Chihaya
Chihaya became unable to sing "Saihyou" seriously. The reason for this was Chihaya feeling her time spent with her family in the past. Chihaya calls Producer to her home and they work hard at breaking her heart's barrier, but the result wasn't heading in the expected direction...
Yukiho
After the festival Yukiho becomes shocked after receiving a fan letter. She slowly begins to lose the confidence she had gained after dominating IE. With Yukiho torturing herself and her emotions being blocked again, will she be able to face her song "Ano Hi no Namida" and regain her self confidence as a top idol...?
Yayoi
Her new song is completed, but Yayoi doesn't know the feelings in the lyrics and begins studying them. Yayoi has Yukiho and Makoto teach her about love, but the lessons aren't going well and Yayoi is worried. Yayoi decides that to succeed that she should go on a date with Producer?!
Ritsuko
Ritsuko can't take a step forward with her new song "Watashi datte Onnanoko". Ritsuko realized there was a gap between the lyrics and herself. She thinks that she should handle love more assertively, and challenges something she normally wouldn't, but...
Azusa
Just like her song "Koi Kokoro" that was made with her honest feelings in mind, Azusa is living her life overflowing with sweet love. Azusa's popularity is continuing to rise, and Producer proposes that Azusa aims higher and continues her activities worldwide, but...?
Iori
Iori has became perfect at singing her new song "Zenryoku Idol". Iori participates in an audition for a role in a drama that is similar to her song's lyrics, and is bewildered at differences between herself and the role's personality. Iori realizes that reason is because she is already a popular idol and her pride is hurt, but...
Makoto
Through the fes with Leon Makoto was worried about what was lacking about her song, but from Leon herself she is giving the shocking advice of "have love". Returning to a flustered Producer, Makoto was burning with combativeness...
Ami
To make her song "Triple Angel" higher after being completed, Ami decides to practice the song's theme of "Be sexy in the future, be fun now!" and she begins playing. The result was Ami's grades at school decreasing. Her mother is concerned and finally bans her from "playing"...?!
Miki
Miki doesn't understand the hidden themes in her new song "Nostalgia" and can't make it her own. Producer knew that this song was made just for Miki and decides to analyse the lyrics together with her. While doing this they look back from when they first met to now...
Hibiki
Singing her new song "Pon De Beach" should have fired up the live, but Hibiki felt that afterwards lonely reverberation became a problem. She masters the song, the listeners continue to have fun, and Hibiki and Producer involve the fans as they try challenging various things.
Takane
After completing her new song, Takane aims even higher and begins studying zealously. The real reason for this was Takane was bothered by Leon pointing out her weak point. At this time, Takane is contacted by an old man she's known since she was very young who worked at the Shijou home and is now sick and bedridden...
Mami
Mami is continuing her activities as a top idol, but remembers that she's unsatisfied that she's lacking a personal aura. She begins imitating a legendary person and tries changing her singing style, but as usual Mami begins straying from this. Amazed at Leon, she becomes cornered...