劇情設(shè)置在現(xiàn)代巴黎，中法混血的Marinette Dupain-Cheng（瑪麗內(nèi)特·杜平-程）是一個(gè)普通的中學(xué)女生，性格有些猶疑羞澀，夢(mèng)想成為時(shí)裝設(shè)計(jì)師，暗戀同班的帥氣男生Adrien Agreste（阿德里安·阿格里斯特）。當(dāng)有壞人威脅巴黎時(shí)，Marinette化身正義勇敢的英雄Ladybug（瓢蟲），搭檔愛調(diào)戲人的Chat Noir（黑貓），一起打擊邪惡勢(shì)力。但Marinette并不知道面具下的Chat Noir正是她一直不敢表白的男生Adrien，而Adrien也不知道自己的暗戀對(duì)象Ladybug卻是Marinette。
　　Set in modern-day Paris, the series focuses on a teenage junior high school girl named Marinette Dupain-Cheng and her classmate and crush Adrien Agreste. When evil arises, Marinette becomes a superhero named Ladybug, while Adrien becomes Chat Noir/Cat 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.