沧元界妖邪作乱，人族饱受摧残，主角孟川自小立下为母复仇的誓言，以镜湖道院为起点，凭借坚毅无畏的心志与利落果决的刀法身手，惩处奸恶，溃灭妖族，登顶四大道院，名满东宁府，拜上元初山，成就一代神魔。
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!
明日岛虽然鼓励创新，但新技术存在着很高的风险，同时明日岛也面临着很多自然灾害。面对各种危机，由代表科学（S）的赛拉斯、技术（T）的甜甜、工程（E）的爱迪、艺术（A）的阿力、数学（M）的曼妮莎和运动（！）的小金组成的超学先锋就会挺身而出，赶往救援的第一线。在塞拉斯的指挥下，队员们分工合作，利用各种科学知识解决各种麻烦。在处理危机的过程中，队员们可能会产生观点和行动上的分歧，但最后大家总能坚持团结合作精神，并找到解决问题的最佳方案。而人工智能百变校巴作为超学先锋的重要成员，也会变身各种工程车，助力救援行动。
