Plot One day in London takes us to England in the Victorian era. The main character of the story is a young man named Jeremy. He comes from a noble aristocratic family. But he is not very interested in social life. He devotes all his free time to the occult and magical rituals. The guy finds like-minded people and summons otherworldly spirits. One day, the young man learns that the ancient legend turns out to be true. The surrounding reality is actually filled with demons and other supernatural beings. At the same time, they begin to actively disturb the population of a huge city.

The user takes control of a young man. In Van Day in London, you will have to experience an amazing adventure. First of all, you need to deal with the intrigues that the townspeople are weaving. This happens under the direct influence of ghosts and spirits. During the passage, the player will plunge headlong into the study of the other world in order to put an end to dark deeds. Along the way, you should fulfill the requests and instructions of the townspeople, which will also shed light on what is happening. To achieve the goal, you will have to solve a lot of puzzles, solve riddles and go through mini-games. The user takes direct part. You should participate in dialogues, perform actions, establish relationships with other participants. The game is made in the form of a drawn novel containing several alternative endings.