![Code:Realize](https://image.chilimovie.com/public/300px/20190809/qoQQ1jnCNBzcIl1VO0XgC4yhL3N.jpg)
Cardia is absorbed by the celestial sphere, and while inside it, she sees her father's memories. Among them is the event in their past that pushed him over the edge into madness.
Cardia has been captured aboard the Nautilus. Lupin and the others want to help her, but they're helpless in the face of the massive flying fortress. Lupin tries to board it himself, but Van stops him, reminding him that he's injured.
The British Army marches on St. Paul's Cathedral, Twilight's base. As a diversionary force, Lupin and the others have infiltrated the cathedral, but waiting inside is Aleister, Van's former superior.
Finis has taken over London through a coup d'état as he moves forward with the Code: Realize plan. Meanwhile, Saint appears before Cardia and identifies himself as a member of Idea.
Van and the rest are searching for Cardia in London when an explosion suddenly breaks out. Isaac's terrorist plot has begun. A coup d'état also begins from within the British Army, endangering Queen Victoria.
After learning that she's a homonculus, Cardia runs away from the mansion without telling Lupin and the others.
A mafia-sponsored airship race is being held, and first prize is the posthumous writings of Isaac Beckford. Lupin and the others believe the writings might give them some clues about Isaac, so they enter the race.
Thanks to Finis, Lupin and the others are on the wanted list after the train explosion, making their search in London for information on Isaac difficult. Fran shuts himself up in his lab, making Cardia worry.
Lupin and the rest move forward with the plan to capture the train Finis is riding. Lupin and Cardia board the train in disguise, and all seems to go as planned... until a man appears before Lupin.