|Major Spoiler Warning|
This page contains major spoilers from an episode(s) that has not aired in the US yet.
|“||[To rate out of 10] Season 4: Over 9,000.||”|
In the US, the season will premiere in the summer of 2021 on the Disney Channel.
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! 
For the production history, announcements, and released spoilers for Season 4, see Season 4/History
Cast and crew
- To view a complete list of all the staff and cast that worked on Season 4, go to Season 4/Credits.
|Season||Episodes||Season premiere||Season finale|
|Episode Title||Airdate||Production code|
|Since becoming the new guardian of the Miracle Box, Marinette has been overwhelmed. She doesn't see her friends anymore, abandons Cat Noir, and misses all her dates with Luka. Luka senses that Marinette has a secret, but she can't tell him that when she leaves, it is to become Ladybug and save Paris. Deeply hurt that Marinette doesn't trust him enough to confide her secret, Luka is akumatized into Truth. Helped by his sentimonster, Pharo, a giant eye capable of forcing people to tell the truth, he not only wants to know Marinette's secret... but also Ladybug and Cat Noir's secret for Shadow Moth!|
|Adrien's friend is akumatized into Lies. Able to make liars disappear, she wants to rid the world of lies and those who tell them... including superheroes!|
|?||?||"Gang of Secrets"
|Marinette's friends are akumatized into Gang of Secrets, a team of supervillains determined to save her... whether she likes it or not! Will her secrets resist them?|
|?||?||"Mr. Pigeon 72"
|Mr. Ramier is akumatized into Mr. Pigeon for the 72nd time but this time he can turn people into evil pigeons!|
|The appearance of Su-Han, a celestial guardian of the Miraculous, leads Ladybug to prove that Master Fu has given her the mission to guard the Miracle Box. What will she do if Master Fu has lost his memory?|
|When Chloé is akumatized into Queen Banana, Ladybug decides to entrust a Miraculous to a new and promising ally. She should help her to stop the supervillain and her giant gorilla.|
|Marinette discovers a secret from Juleka and promises to not tell anyone, but her way ends up delivering the truth to Rose. Juleka is devastated and Shadow Moth takes the opportunity to akumatize and bring a sentimonster.|
|What would happen if Shadow Moth created a terrifying supervillain, while Marinette and Adrien couldn't turn into Ladybug and Cat Noir?|
|Episode Title||Airdate||Prod. code|
|1||?||"Furious Fu"||March 23, 2021
|2||1||"Truth"||April 3, 2021
|Switzerland: RTS Un||401|
|3||?||"Lies"||April 10, 2021
|Switzerland: RTS Un||402|
|4||?||"Gang of Secrets"||April 17, 2021
|Switzerland: RTS Un||403|
|5||?||"Guiltrip"||May 4, 2021
|6||?||"Mr. Pigeon 72"||May 23, 2021
|7||?||"Queen Banana"||May 28, 2021
|Germany: Disney Channel||408|
|8||?||"Optygami"||May 30, 2021
|Germany: Disney Channel||413|
- In this season, Chloé Bourgeois will no longer be Queen Bee and will be succeeded by Zoé, who was later confirmed to be her half-sister, after she was corrupted by Hawk Moth to join his side as stated in the Make a Wish video by Miraculous Ladybug YouTube Channel.
- This will be the first season to be co-produced by Globosat and it will participate in the artistic development of the project.
- Although Globosat's co-production begins with the fourth season, the credits for the third season also include Globosat.
- Like Season 3, this season will feature characters, such as Chloé, Luka Couffaine and Kagami Tsurugi, who will be akumatized again, but with different identities from those of previous occasions.
- Eight new Miraculous holders will be featured this season: Mylène Haprèle as Multimouse, Zoé as Vesperia, Rose Lavillant as Pigella, Tigresse Pourpre, Traquemoiselle, Coq Courage, Caprikid and Minotaurox.
- This season will feature a "bomb" in every episode that are the "equivalent impacts of Cat Blanc".
- Even though it was originally announced that SAMG Animation is no longer part of the production of the series, they'll animate some episodes of S4 with DQ Entertainment, Assemblage and Artage Studio, making it four studios animating for this season. As seen in Lies' credits, Symbiosis also animates for Season 4.
- According to Wilfried Pain there will be a new character from the future and Félix Graham de Vanily will return.
- The second official promotional poster for this season was made by Konrad Olchawa, a Polish freelance artist and a fan of Miraculous.
- Season four was originally going to premiere in Fall 2020. However, due to the COVID-19 pandemic, it was delayed.
- This season will be the first to air on Disney+ as Netflix's contract with the show ends after the third season.
- Season 4 have a new opening credits compared to the previous seasons.
Click here to view the gallery.