Marinette and her friends hang out at the Couffaine residence to listen to them play. Jagged Stone approaches them and explains that he is looking for a new guitarist after he fired his old guitarist Vivica. Suddenly, they are attacked by Vivica, who has been akumatized into "Desperada" and can capture victims in her guitar case with her magic trumpet. The group scatters and Ladybug fights Desperada, but is forced to retreat. Lucky Charm directs her to Master Fu, where she takes the Snake Miraculous and gives it to Adrien. Adrien decides to forego his role as Cat Noir in order to woo Ladybug directly and transforms into the snake superhero "Aspik", but after so many "second chances", his role ends up getting Ladybug hit by Desperada's power over and over again in so many ways. Realizing the error in his role, Adrien suggests to Ladybug that Luka should wield the Snake Miraculous instead. This allows Adrien to go back to being Cat Noir in which he's comfortable in. Luka transforms into the snake superhero "Viperion", and with a couple more "second chances", Ladybug, Cat Noir and Viperion are able to defeat Desperada. Afterwards, Jagged apologizes to Vivica and rehires her.
The wait is over and the dust has settled over Paris. With "Nemesis," the 26th and final episode of Season 6, "Miraculous, les aventures de Ladybug et Chat Noir" has closed one of its boldest chapters to date. Season 6 premiered in France on TFOU in March 2025 and finished its French run on October 11, 2026. Across those 26 episodes, Thomas Astruc's superhero phenomenon did something few long-running animated series attempt: it changed the status quo for good. If you've just finished the finale and are still processing it, this debrief is for you.
A new cycle that took real risks
To understand why "Nemesis" lands so well, you have to remember where this season started. Season 5 ended the Agreste family arc, the storyline built around Gabriel Agreste, voiced with chilling restraint by Antoine Tomé as Hawk Moth and later Shadow Moth. Season 6 is the first season of a brand-new arc. With a new holder of the Butterfly Miraculous turning Parisians into akumatized villains, the writers had the freedom to rethink the show's formula. The premiere, "Climatiqueen," made that clear immediately, and the season kept introducing threats that felt different from the old villain-of-the-week pattern, including a wonderfully imaginative antagonist in the early episodes.