It's Christmas in Paris, a time for generosity, giving and spending time with family. At least not for everyone, Adrien has to celebrate his first Christmas without his mom, and he thinks that his father is not interested in celebrating the holiday with him this year, which inspires him the idea to run away from home as Cat Noir to sing out his anger in the cold and snow. When the news of his disappearance spreads all over Paris, Adrien's friends go out searching for him while Marinette transforms as Ladybug to search the cold and snow for the boy she secretly loves. But things get worse when she accidentally causes a man dressed as Santa to get akumatized on Christmas Eve, now Ladybug and Cat Noir have to stop him before he destroys the holiday for everyone.

After Marinette learns more about the Miraculous book she took from Adrien, she begins to suspect his father of being Hawkmoth. Meanwhile, Gabriel, furious over Adrien losing the book, gets akumatized into The Collector.

After Chloe's latest prank puts her friendship with Adrien at risk, she throws a party at the hotel for the entire class in an attempted display of niceness. However, she snaps after seeing Adrien dancing with Marinette and lashes out at her butler, getting him akumatized into Despair Bear.

Nadja Chamack, news reporter, invites Ladybug and Cat Noir for an interview. Nadja, noticing the playful conversation between the 2 superheros, questions if they are a couple. Ladybug denies they are together and Cat gives little remarks that make it seem like they are. Not wanting to answer personal questions that could reveal her identity, Ladybug leaves the interview before it is over. Nadja's ratings drop and her boss tells her she can no longer have her prime time show. Hawkmoth sends an akuma and turns her into Prime Queen, a villain who can reach through screens and can handle all things tech. Prime Queen uses people who called into her show as bait for Ladybug and Cat Noir. Prime Queen puts them through the tasks of saving Chloe from a speeding train and Alya from falling and drowning in a river. Prime Queen's main goal is for the superheros to confess their love for one another and to take the miraculouses.

Marinette's grandma visits and gets akumatized into the Befena.

A mysterious masked fencer is humiliated in a duel against Adrien. Boiling with rage, it breaks and it is akumatized in Riposte, and its saber seeks revenge.

Markov, a small robot invented by Max is akumatized in Robostus, a villain that can give life to unanimated objects.

The Butterfly is trap at its own game when the Miraculous he sends does not reach the desired target. Ladybug and Cat noir will have to face a giant baby.

Mr. Damocles becomes the perfect target for Hawk Moth when his dreams of becoming a third superhero of Paris are crushed.

Legendary ice cream maker Andre gets akumatized into Glaciator.

Alya's little sisters, Ella and Etta, become Sapotis after staying up. Ladybug and Cat Noir must seek help from an ally to defeat the multiplying monsters.

After failing to find Adrien, his bodyguard gets akumatized into Gorizilla. With his new sense of smell, he is able to track Adrien throughout Paris.

After being akumatized by Hawk Moth into Captain Hardrock, Juleka's mother steers a powerful ship and blasts her music for all of Paris to hear.

Miss Bustier is akumatized into Zombizou and turns Paris into kissing zombies.

A talented swimmer named Ondine with feelings for Kim is akumatized into Syren and turns Paris into an underwater kingdom for her prince.

A young singer and dancer hold auditions for a video honoring Ladybug and Cat Noir. Chloe stops the tryouts. Anguished, the singer is akumatized into Frightningale, who uses a magic mike to try and turn Paris into a living musical.

After solving everyone else's problems way too much, Penny loses her cool and is infected with an akuma that transforms her into Troublemaker, a supervillain who causes problems instead.

Alya's overprotective, MMA fighting sister, Nora, is akumatized as Anansi, a spider-like villain. When Cat Noir is ensnared in her web, Ladybug gives the turtle miraculous to Nino. He becomes Carapace. They free Cat Noir and defeat Anansi.

While having to go without Tikki, Marinette must stop Sandboy, a supervillain bringing the citizens' nightmares to life.

After Nathaniel disregards Marc's writing, Marc is akumatized into Reverser and determined to get revenge on Nathaniel and Marinette.

A figure skater named Philippe is akumatized into Frozer and is determined to turn Paris into an ice kingdom.

After being humiliated by Gabriel Agreste, Chloé's mother, Audrey Bourgeois, is akumatized into Style Queen. Armed with a magic scepter and determined to get revenge, she attacks Adrien. How will Ladybug defeat Style Queen without Cat Noir to help her?

After failing to impress her mother by turning into Queen Bee, Chloé is akumatized into Queen Wasp.

When Chloé threatens to leave Paris, Mr. Bourgeois is akumatized into Malediktator, a supervillain armed with absolute power and determined to make his daughter stay with him.

Marinette lies about preparing a good deed to perform for others on the Day of Heroes and quickly finds her untruth spinning out of control.

Ladybug and Cat Noir face one of their most fearsome opponents when Hawk Moth sets a sinister plan into motion by akumatizing his assistant.