The Order: 1886

During the autumn of 1886 London is plagued by both half-breed attacks and an anti-government insurgency. After fighting off rebels in Mayfair, Sir Galahad pursues the survivors into the Underground where he encounters a number of werewolf-like half-breeds known as Lycans. Galahad's mentor, Sir Percival, one of the Order's most veteran knights, suspects that there is a correlation between the two and requests permission to investigate the rebel stronghold of Whitechapel. His concerns are dismissed by the Lord Chancellor, who believes that the Order should remain dedicated to fighting half-breeds.

With tacit approval from Sir Lucan, the Order's Knight Commander and adopted son of the Lord Chancellor, Percival and Galahad undertake a mission into Whitechapel accompanied by the other two members of their team, Lady Igraine and the Marquis de Lafayette. After encountering fierce resistance they reach the rebel headquarters in the abandoned Royal London Hospital, only to find it occupied by Lycans. Galahad and Igrane discover evidence of a rebel plot to infiltrate the Agamemnon, flagship of the United India Company's airship fleet, and assassinate the company chairman Lord Hastings, a frequent guest to the Round Table. The team boards the airship and foils the assassination attempt before a bomb detonates on board. Hastings and most of the passengers are evacuated, but Galahad and Percival remain on board to search for the rebel leader. A second explosion sends the Agamemnon crashing into Hyde Park, destroying the Crystal Palace in the process. Galahad survives but discovers that Percival has been killed.

In council at the Palace of Westminster, Lafayette is knighted and assumes Percival's seat at the Round Table. The Lord Chancellor is highly critical of the mission, asserting that Percival's death and the extensive collateral damage were in vain. The council is interrupted when rebels stage a major attack on Westminster Bridge aimed at killing Hastings, who is once again saved by the knights.

Still enraged by Percival's death, Galahad returns to Whitechapel seeking a confrontation with the rebel leader, who is revealed to be an Indian woman named Lakshmi who is later revealed to be the hitherto presumed dead Queen Lakshmibai of Jhansi of the princely state of Jhansi in Indian subcontinent. Pleading with Galahad that the United India Company is the true enemy, she leads him to the company's warehouses in Blackwall where they discover a large number of hibernating vampires packed in crates bound for the Northeastern United States. According to Lakshmi, Lord Hastings himself is a vampire (known to the general public as "Jack the Ripper") and is acting in response to the Order's recent success.

At Westminster, Galahad's concerns fall on deaf ears. Lucan sympathizes with him however, and joins Galahad and Lakshmi in infiltrating the United India Company headquarters in Mayfair. They find evidence of a conspiracy to traffic half-breeds overseas and encounter Hastings in his vampire form. Before Galahad can act against Hastings, Lucan reveals himself to be a Lycan and attacks Galahad. The two fight, but Lucan flees as the authorities arrive. Galahad is taken into custody by Lafayette and Igraine, charged with treason, and sentenced to death.

After several weeks, Galahad escapes captivity in the Westminster Catacombs and attempts to flee only to be cornered. Facing re-imprisonment, Galahad throws himself off a ledge into the River Thames and is recovered by Nikola Tesla , the Order's armourer with the help from an old-man. Tesla later sought help from Lakshmi to help take care of him. Lakshmi later reveals to Galahad, upon being questioned about her having blackwater, that she was bestowed a knighthood by Sir Bors de Ganis. Fearing that Tesla has come under suspicion, Galahad returns to Westminster in an attempt to extract him. He finds Tesla alive but also encounters Lucan in the laboratory. The two fight a second time with Galahad emerging the victor. The mortally wounded Lucan expresses regret for having betrayed the Order, claiming that he only did so in order to save his race from extinction. The two are discovered by the Lord Chancellor, who confesses his knowledge of Lucan's true nature. He reveals to Galahad that centuries before he had fought and destroyed an entire tribe of Lycans, but couldn't bring himself to kill the infant Lucan, who he adopted as a son instead. The Lord Chancellor orders that evidence of Lucan's betrayal may not be used to exonerate Galahad and must be kept a secret for the sake of the Order. Still unwilling to kill his son, he leaves Galahad to administer the coup de grace. The two former comrades reconcile, and a remorseful Galahad raises his weapon and fires, killing Lucan, as the screen cuts to black.

In a post-credits scene, Galahad is seen on the roof of a building overlooking London, which has been put under martial law. He is warned by Tesla over the radio that the police could strike anytime and that they should leave the city immediately. Galahad reminds Tesla that he is "Galahad no more".

The Order: 1886 is a story-focused action-adventure game played in a third-person perspective. The player takes control of Sir Galahad of the Round Table, an order serving as protectors of an alternate history London. The gameplay mostly revolves around cover-based shooting. The game is structured in a linear manner; the player guides Galahad through the environments, following the story. Galahad and his fellow Knights battle against multiple different foes, including regular humans, and half-breeds, werewolf-like creatures. Galahad is equipped with several tools and weapons for use in combat, such as variations of rifles, grenades, crossbows, and pistols.

Aside from combat with firearms, Galahad also utilizes melee attacks and silent kills to defeat enemies. Another major aspect of the gameplay is use of quick time events. The player is often required to complete button prompts in order to progress. Several types of collectibles providing lore are scattered throughout the world for the player the collect.