时间是2045年，故事的舞台是日本制造的太空站“安心”，在月球出生的少年“登矢”和儿时玩伴“心叶”为了移居地球而在太空站进行复健，但他们却和首次到宇宙旅行的地球孩子“大洋”、“美衣奈”、“博士”一同被卷入了太空站与彗星的冲撞事故。在与大人们隔绝，网络也被切断的封闭空间中，时而冲突、时而互助的孩子们，必须共同面对减压、EVA（宇宙游泳）、微型机械失控等种种困难。
少年秦烈为守护唐思琪，不顾境界相差悬殊和梁少扬对战，同时他体内沉睡的力量开始慢慢觉醒。器具宗在玄天盟派八大门派围攻下，遭遇到宗门存亡危机！秦烈答应器具宗宗主誓死守护器具宗，与此同时，七煞谷谷主鸠琉瑜却带着最强大的秘密武器偷偷潜入灵坛，打算夺取秦烈的性命……
By daylight, Marinette Dupain-Cheng and Adrien Agreste are ordinary teenagers. But unbeknownst to their family and friends, the two of them carry a huge secret...using the powers of magical creatures called Kwami, they transform into the superheroes Ladybug and Cat Noir! With a mission to protect the city of Paris from the evil Hawk Moth, the two of them must learn to cope with their new responsibilities, as well as ordinary troubles involving love, school, family, and friends. Most of all, they must learn to put their romantic feelings aside in order to perform their duty, unaware of each other's true identities. The second season premiere is scheduled for a global launch around September–November 2017 in Europe, At a panel at San Diego Comic-Con 2017, it was announced that the second season would have its North American release on Netflix in December 2017, with 13 episodes to be released. KidsClick will start airing season 2 of this show in the US starting 30 August 2018, marking the first time that Season 2 of this show airing on American over-the-air television. A third season is also in development. On 22 January 2018, Zag posted on Instagram that the crew was working on a fourth and fifth season. On 31 August premiered a new series with Miraculous: Tales of Ladybug & Cat Noir which this time is in chibi style. On 5 September, 2018, Skydance Media has acquired the live-action film and live-action television rights.
