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.

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.

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.

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.

Thanks to the comments of Chloé Bourgeois to Aurore Beauréal at the Collège Françoise Dupont, Ladybug and Cat Noir once again face Stormy Weather.

A villian from the future travels back in time to try to defeat Ladybug and Cat Noir when they are younger. The heros meet a hero from the future who had been trapped in the pass for centuries.

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 immobilizing people so that way Truth can hit people with his beam to tell the truth, he not only wants to know Marinette's secret but also Ladybug and Cat Noir's secret for Shadow Moth.

Marinette struggles to maintain balance between her superhero and civilian lives. Alya learns something new about her best friend.

Mr. Ramier is akumatized into Mr. Pigeon for the 72nd time but this time he can turn people into evil pigeons.

Ladybug and Cat Noir face someone they know well - and of whom they never thought that one day they would have to fight against him.

Adrien asks Marinette a favor, who can't say no and ends up leaving her grandfather taking care of the 4 children she was taking care of to help Adrien. What she doesn't realize is that it ends up making her grandfather the Shadow Moth's next target.

After stealing the Miracle Box, Shadow Moth turns into Monarch and uses the Rabbit Miraculous to return to a vulnerable moment in Ladybug and Cat Noir's past to capture their Miraculous.

Marinette decides on giving up her love of Adrien to avoid any more disasters and focus on preparing to battle Monarch, but the days go by and no akumatized villains have appeared yet. Has Monarch given up?

What if Monarch could force the Kwamis who know Ladybug's address to lead him to her? The unfortunate little creatures would have no choice but to obey him... And if Monarch showed up at Marinette Dupain-Cheng's home, would she be able to escape him?

While Marinette tries to convince herself that she has to stop being in love with Adrien because it diverts her from her superhero role, she discovers that she has feelings for someone else.

Marinette tries to convince herself that she loves Chat Noir to forget about Adrien. Adrien has given up on being in love with Ladybug, is trying to declare his feelings to Marinette.

Marinette uses Tikki's Reunion to summon Johanne of Arc, a previous Ladybug holder, to ask about the possible romance between her and Chat Noir. Meanwhile, Pharaoh is reakumatized and asks questions for Ladybug to solve.

Despite Alya's protests, Marinette decides to pursue her new love for Cat Noir by going on a romantic night out with him. But they are spoiled after encountering a Ladynoir fan who reveals some unsettling revelations about their love lives

Tikki and Plagg are sad to see their carriers so sad to be forced to give up their feelings. The Kwamis will then make a radical choice that will change many things in Paris.

Monarch is faced with a unique opportunity that he refuses to lose. The Kwamis made a decision that completely distracted Marinette and Adrien from their responsibilities. For better and for worse.

Marinette's friends decides to help her to get closer to Adrien, then the whole gang finds out that one should always be clear with friends.

Luka develops a special interest in Bob Roth, who would do anything to make money. Luka himself would do anything to defend his values and his friends.

Marinette starts to feel traumatized when she and Adrien prepare to have a normal date at the pool as she once had a crush on Kim last year and Chloe pulled a series of nasty pranks on her.

Monarch is ready to do anything when he senses a unique occasion to get a real second chance even if it is his last chance to seize the Miraculous.

As the gang comes up with yet another overcomplicated plan to bring Marinette and Adrien together, Lila uses her talent for manipulation to persuade Kagami that Marinette is a liar who abuses everyone else's kindness. Shocked, Kagami is akumatized into Riposte Prime. She lays into Marinette at the very moment when Adrien had managed to finally make her feel comfortable around him. Will Lila's poisonous lie ruin the friendship between Kagami, Marinette and Adrien?

When Marinette and Zoe are chosen to organize the end-of-school-year party, Marinette learns that Zoe is secretly in love with someone in ninth grade at school. Zoe says that she cannot talk about it. To Marinette, this can only mean one thing: Zoe is in love with Adrien! But before she finds out whether she is right or not, a common enemy of the girls will try to ruin their beautiful friendship

Adrien must attend a dance organized by his father and Mrs. Tsurugi. He will be the King of the Ball alongside Kagami, who has been chosen to be this year's Queen. But neither of them wish to go for the dance.

Marinette decides to have a heart-to-heart with the father of the boy she loves. By seeing her courage her friend Kagami finally dares talk to her mother.

Lila uses an incident in class to calls for new elections to replace Marinette as class representative.

Junior high will soon be over, Lila and Chloe are planning to defend their classmates' future before their teachers; Marinette and Adrien worries what the two brats' next evil plan will be.

The end of school year is nearing, and rebellion is brewing. Monarch decides to on a plan that is dangerous for his secret identity and for Ladybug and Cat Noir, too.

Chloe and Monarch are more powerful than ever, Ladybug and Cat Noir wonder about their powers. Marinette and Adrien's lives are about to change forever.

Adrien disobeys father to go find Marinette but she discovers a secret nothing could have prepared her for.

Monarch places the final pieces of his villainous plan on his chessboard of evil.

Monarch's ultimate plan is in motion. Nothing seems able to stop him now. Especially considering that, while the world descends into chaos, the supervillain has just trapped Ladybug in person...