辛普森一家是來自美國普通的五口之家，荷馬（丹?卡斯泰蘭尼塔 Dan Castellaneta 配音）是春田鎮(zhèn)核能工廠的安全檢查員，母親馬芝（朱莉?卡夫娜 Julie Kavner 配音）曾經(jīng)是一個很有思想的女性，自從嫁給荷馬后漸漸地適應(yīng)了主婦生活的定式。巴特（南茜?卡特萊特 Nancy Cartwright 配音）是家中的長子，天性頑皮的巴特經(jīng)常愛玩一些惡作劇，以至于經(jīng)常惹麻煩。妹妹麗莎（雅德麗?史密斯 Yeardley Smith 配音）是一個很聰明的孩子，同時還是素食主義者，佛教徒，爵士樂。小女馬姬是一個永遠長不大的孩子。故事設(shè)定于虛構(gòu)小鎮(zhèn)春田鎮(zhèn)，從許多角度對美國的文化與社會、人的條件和電視本身進行了幽默的嘲諷，經(jīng)久不衰。

　　Not only is Marinette Ladybug, the superheroine that protects Paris from the attack of villains, but she’s also now the guardian of the Miraculous. This means that not only does she need to keep her identity hidden, but also the existence of these turbulent, magical creatures, the Kwamis! Marinette has a lot of pressure, not to mention her school and love life! Now she has less time and opportunities to tell Adrien her feelings...
　　Marinette now has to redouble efforts to protect her secrets and Ladybug will have to become stronger to face an indomitable adversary: Shadow Moth, who can now fuse the Butterfly and Peacock Miraculous! Thankfully, Ladybug can count on Cat Noir and their new superhero allies!

夏季慶典結(jié)束后，打烊了的學生們有一個E班的學生來到他們身邊。第二天，在開班儀式上的講臺上竹林突然做出了與E組一起度過的4個多月如同地獄的樣子。在知道竹林超過E組加入A組的E組學生試圖說服他……。