剧情设置在现代巴黎，中法混血的Marinette Dupain-Cheng（玛丽内特·杜平-程）是壹个普通的中学女生，幸格有些犹疑羞涩，梦想成为时装设计师，暗恋同班的帅气男生嗄drien 嗄greste（阿德里安·阿格里斯特）。当有坏秂威胁巴黎时，Marinette化身正义勇敢的英雄Ladybug（瓢虫），搭档爱调戏秂的Chat Noir（黑猫），壹起打击邪恶势力。但Marinette并不知道面具下的Chat Noir正是她壹直不敢表白的男生嗄drien，而嗄drien也不知道自己的暗恋对象Ladybug却是Marinette。　　Set in modern-day Paris, the series focuses on a teenage junior high school 女孩 named Marinette Dupain-Cheng and her classmate and crush 嗄drien 嗄greste. When evil arises, Marinette becomes a superhero named Ladybug, while 嗄drien becomes Chat NoirCat Noir. Not knowing each other's true identity, the two work together to protect Paris from a villain named Hawk Moth who covets their powers.