描述岩手縣一位內向的女孩天野秋從期望當上“海女”的工作而努力時，逐漸成為地方的偶像，又漸漸成為全國偶像的故事。

中學 1 年級生的星宮苺被親友霧矢葵建議，參與名門培育偶像的學校—星光學園的入學考試。與周圍的人都稱為「偶像博士」的小葵比較，小苺對藝能界的事完全沒有興趣，但意外通過入學考試後與新朋友紫吹蘭一起展開試鏡活動。三人能如願以償成為正式的偶像明星嗎？

PriChan is a channel where anyone can become an idol! Every girl dreams about producing her own sparkling, exciting channel and becoming a popular PriChan Idol! First-years at Kirarigaoka Middle School, Momoyama Mirai and Moegi Emo, end up making their own PriChan debut out of a feeling of rivalry towards their classmate, the PriChan Idol Akagi Anna. Bringing the knowledgeable straight-A student Aoba Rinka into their group, they begin to craft their new channel while dreaming about becoming PriChan Idols!

這是以成為頂尖偶像為目標，進行偶像活動的少女們的故事。『偶像學園 STARS！』 偶像學校四星級學園。學園裡的頂尖偶像 4 人被稱為 S4，在偶像活動界裡非常活躍！ 新生們都以成為 S4 為目標，努力進行偶像活動。 讓閃爍的「偶像活動！卡片」大發光芒！ 為了讓自己大放異彩而親自製作！ 率直地變得更加明亮！ 不論唱歌跳舞還是打扮！ 懷抱女孩們的所有嚮往，展開全新的偶像活動。 朝向偶像的最閃亮之星，邁向夢想的開端！！

A typical morning. The usual music. Their normal lives. The peace these seven girls experience will suddenly be destroyed. By the living dead... zombies. A reality that they never wanted a part of, an amazing and terrifying zombie world. They all share one wish: "We want to live." These girls will struggle through this saga, in order to achieve a miracle.

There are many idols with long-established talent agency 346 Production. And now the company is starting a new program, the Cinderella Project! Girls leading normal lives are chosen to be aspiring idols and see another world for the first time in this Cinderella story. Can they all climb the stairs that lead to the palace?

The magic begins now...

公元2067年，以銀河系邊境的星系為中心，能令患者喪失自我而狂暴化的神秘疾病「瓦爾綜合症」正在逐漸擴大。察覺事態嚴重性的星間複合企業為了鎮靜這種症狀，將少女組成的戰術音樂組合「Walküre」與執行共同作戰的「Δ部隊」編成到一起。

另一方面，「風之王國」中被稱作「空中騎士團」的「謎之Valkyrie部隊」開始行動。在「原始文化的遺產」之謎的交錯當中，超越星系的熱切戀情與友情的物語開幕……

THE IDOLM@STER follows 13 girls from the 765 Production Studio, whose sole goals is to become the top idols in the Japanese entertainment industry. Along with the laughs, struggles and tears that are inherently part of this journey, you will cheer for the girls of iDOLM@STER as they climb their way to the top!

Media student Bu Xiao Gu has a dream: she is determined to become an outstanding producer. Her idol is Chun Yu Qiao, who is a top-notch producer at Xintian production company, and Xiao Gu manages to enter the company as an intern. But Yu Qiao’s unreasonable personality makes Xiao Gu feel great disappointment. With her hopes shattered, Xiao Gu is asleep at the wheel and not only causes a live broadcast accident which makes her lose her job, but also misses the deadline for her master thesis. However, Yu Qiao takes on the sole responsibility for the accident and thus saves Xiao Gu’s career. Xiao Gu finally recognizes Yu Qiao’s true personality and the two start to work and fight for their dreams together.

Aine Yūki is good at making friends, and is enrolled in Star Harmony Academy's general education track. She befriends Mio Minato, the school's top idol, and becomes an idol herself.

Usagi Tsukino is a clumsy teenage girl who becomes a Magical Girl named Sailor Moon after meeting a cat named Luna, who tells her she is a destined warrior who must find the reincarnated princess of a lost kingdom. Along the way, she meets other reincarnated warriors who join her group known as the Sailor Senshi who fight the forces of the evil mastermind behind the Dark Kingdom.

Eriko, a young girl with a natural gift for singing, is the only daughter of a famous music producer and a singer, whose death will be a hard setback for her.

Right after Ryu Sun-jae, a top star, ends his life, Im Sol, his top fan, somehow ends up at a time when they were in high school and tries to protect him. A fantasy romance unfolds where people who missed each other in time finally meet.

Shin Suk-Ho worked for the biggest entertainment company as a director, but he is now the CEO of a new and tiny entertainment company. He gathers people to form a band. Through various incidents, Shin Suk-Ho becomes a real and successful manager.

小鎮醫生結識藏有秘密的年輕偶像，因此捲入殘酷無情的演藝圈。

Raki Kiseki is a second-year middle school student who transfers to Star Harmony Academy to become an idol. However, when she uses an Aikatsu Pass she received from her big sister (an Aikatsu engineer), something mysterious happens. Lots of doors appeared before her, and when she opens them, she meets Aikatsu idols she never knew before, such as Yume Nijino (Aikatsu Stars!). Raki vows to design her own premium dress and perform in it on stage.

在這個看重出身勝過夢想的世界，兩名演員和一名化妝師奮力開拓自己的道路。

Teenager Hata Kosaku is crushed when his favorite singing idol, Kusakabe Yuka, stuns the world by retiring from show business. Kosaku’s friends try to cheer him up, but nothing can chase away his gloomy mood until Yuka herself transfers into his class at Tamo Agriculture School!

"Stride," is an extreme sport that involves six people on one team who run relay races through towns. Hōnan Academy and other schools compete to win eastern Japan's top Stride competition, "End of Summer." However, Hōnan's team has shut down. First-year high school students Takeru Fujiwara and Nana Sakurai attempt to restart the club, but they must recruit six members for the team. They ask Riku Yagami to join, but he turns them down by saying that Stride is the one thing he doesn't want to do.