讲述天才发明家的小学生·狸猫，因事故而失去了心爱的姐姐，由狸猫开发的“姐姐·机器人”的故事
为了在职业戏《愈心》中更有表现，糊咖小爱豆杨艺心申请进入壹心工作室实习，从此惹上了壹心首席心理师霍凛，发生了一系列啼笑皆非的故事，而在实习将结束之际，《愈心》因资金问题陷入停滞。谁知此时天降金主相助，等等！这金主好像是我的顶头上司！
炎炎夏日来到，春日恭介（古谷徹 配音）和鲇川圆（鶴ひろみ 配音）却迎来人生中最重要的时刻。大学入学考试在即，他们为了心中理想的学校各自努力。与此同时，春日和鲇川心中的默契与日俱增，只是谁也不知道明天将会如何。另一方面，开朗天真的桧山光（原えりこ 配音）参加歌舞剧的选秀，渴望有朝一日走上纽约的中央舞台。眼见心爱的春日终日忙碌，自己却不能施以援手，这个纯洁的少女只能送上甜甜的香吻作为鼓励。这样的小举动当然会令心思缜密的鲇川发觉，她和春日由此陷入冷战，而这段三角恋情似乎也到了即将摊牌的时刻…… 本片根据まつもと泉的同名漫画原作改编。
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!
