Based on the YouTube Animatic "Dancing Queen" by SugarberryArt.

Many girls dream when they get married to be walked down the aisle by their father. For Emma Dupain-Cheng, that leaves her guessing who her father is based on the writings in her mother's diary. She invites for men he mother mentions she had sex with during a three month period: Adrien Agreste, Nathaniel Kutzberg, Theo Barbot, and Chat Noir. She successfully locates three of the men, but extends an invitation via the Ladyblog to Chat Noir.

Marinette, who left Paris after her discovered pregnancy, runs a boutique off the coast of France, that garners a lot of attention during the summer rush in the small town. Despite retiring as Ladybug once she discovered she was pregnant with Emma, she is now the current guardian of the remaining miraculous after Fu's death, who had helped her make a start in the town. Her friends Alya and Chloe arrive for the wedding, both single. and bearers of the Bee and Fox Miraculous.

Adrien, realizing something suspicious considering both Chat Noir and Adrien were invited when Marinette knew his identity. He invites Nino as his plus one, meeting Nathaniel and Theo, all four travelling together.

Emma meets the men, and can't tell which one is her father or which one is Chat Noir. She hides the men in the boutique while her mother is out with friends.

Marinette finds the men in her apartment, ordering them to leave, except Nino, whom Alya demands leave as well. The men prepare to leave, when Emma stops them and begins to learn more about them. They agree to stay for the wedding for her.

Her fiancée, slightly weirded by the men, expresses his concerns, which she reassures he has nothing to worry about before both of them are whisked off to their Bachelor/Bachelorette parties.

Marinette, Chloe, and Alya perform for the girls, Marinette and Alya angry when they see Nino and Adrien in the distance. After the song, the two girls transform into Ladybug and Volpina and run off, Nino and Adrien transforming into Jade Turtle and Chat Noir to follow them. Theo and Nathaniel are found by the drunk girls, and are subjected to their whims.

Meanwhile Ladybug and Volpina split up, both to talk to their respective man. Ladybug confronts Chat Noir, saying he abandoned her despite knowing she was pregnant with potentially his child. Chat Noir admits to that being a mistake to leave her, even though he was jealous when he heard there were two other candidates for Emma's father. Marinette leads Chat Noir to Master Fu's grave then leaves to go see to her daughter.

Meanwhile, the men from the bachelor party invade the bachelorette party. Emma finds time with Nathaniel and Theo who both come to realize she is their daughter, and agree to walk her down the aisle. Instead of finding Adrien, Emma finds Chat Noir who apologizes for leaving her and her mother and agrees to walk her down the aisle, even though he knows it won't make up for not being there for her. In Emma's confusion, she passes out frightening everyone.

Marinette wakes up Nino and Alya, who had slept together the night before. Furious Alya puts on clothes and storms out, with Nino following and trying to win her back. Chloe on the other hand hit it off with Nathaniel the night before and tries to romance him, which Nathaniel is very hesitant about. Adrien as himself tries to talk to Marinette as she gets ready for the wedding, and Marinette talks about her regrets about loosing him.

Emma eventually comes to the conclusion to have her mother walk her down the aisle, which Marinette happily agrees.

Chat Noir tries to persuade Marinette again how much he loves her, but Marinette turns him down, saying he only loves her out of pity.

Marinette walks Emma down the aisle, the priest eventually asking who gives Emma away, which Marinette, Adrien, Nathaniel, and Theo all claim to be there's. Emma decides instead not to get married and instead travel with her fiancée, urging her mom to find happiness. Adrien does a full confession of his love for Marinette, finally convincing her to marry him.

Marinette and Adrien are married and everyone celebrates before sending Emma and her fiancée off. Alya and Nino are reunited, Chloe and Nathaniel get together, and Theo is gay. Literally.

Whose Who:

Donna - Marinette

Sophie - Emma

Sam - Adrien

Harry - Theo

Bill - Nathaniel

Rosie - Chloe

Tanya - Alya

Pepper - Nino sort of, he's been aged