While the funeral of the assassinated Prince Edward, who was the first in line to succeed the throne, is being held, the nobles of the Kingdom of Albion discuss topics such as whether the second-in-line Princess Mary or the third-in-line Duke of Arkham, Prince Richard, will succeed the throne, and how the Duke of Normandy will act. The Duke of Arkham asks Princess if she will side with him or the Duke of Normandy. While wishing to change the world so that all people are equal, Princess is shaken by the Duke of Arkham, who is the mastermind behind Edward's assassination. Meanwhile, Ange and Dorothy are given a mission to infiltrate as Mary's maids and investigate the state of the royal family by the Commonwealth's control. Mary is crushed and exhausted due to the pressure of becoming first in line to the throne. As chaos surrounds the succession to the throne, the Duke of Arkham's plot finally begins to unfold. The darkness writhing in the Kingdom of Albion begins to swallow up Team White Pigeon.

Following the attempted assassination of the Queen, manhunts for spies become a frequent occurrence within the Kingdom. In response, Control — the Commonwealth's covert operations group — begins to suspect the presence of a double agent within the Kingdom's royal family. In order to reveal the truth, Control dispatches spy ring “Team White Pigeon.” But danger lurks around every corner, and when you don't know who you can trust, being a spy has never been more perilous for Ange and the rest of Team White Pigeon.

The movies will cover the Shadow Galactica arc. The Sailor Senshi team up with the Sailor Starlights to stop Sailor Galaxia from conquering the galaxy.

The film Deep Sea is another original animated feature film directed by Tian Xiaopeng after Monkey King: Hero Is Back and it’s also a 3D animation creation of exploration significance for October Media. Although antique stories are popular among Chinese animation works in recent years, Deep Sea will apply a different way, using unique oriental aesthetics to interpret a fantasy story with a modern background. The film Deep Sea builds a different brand new underwater world, and tells the story of a girl who encounters a unique life journey, seeking and searching in the mysterious underwater world.