The main plot of the film is that in the late 19th and early 20th centuries, a medical student named Newgate graduated from Oxford to intern in a psychiatric hospital in a remote small village in London, and happened to meet and fall in love with a female patient named Eliza in the hospital.

When Newgate first met her from the upstairs of the hospital and played the piano in the corner of the hall, Newgate was immediately drawn to her and could not help herself, convinced that Eliza would not be a mental patient who planned to take her out of the hell hospital.
On the first night of arriving at the hospital, Newgate heard a strange knocking sound coming from under the floor in his room, so he curiously searched for the sound and quietly went to the secret basement of the mental hospital to find a group of normal people who had been imprisoned, and learned about what had happened in the hospital not long ago.
Dr. Lamb, the director of the psychiatric hospital who had received Newgate, and all his hospital staff were actually psychiatric patients of the hospital, and before Newgate came here, these patients conspired to add anesthetics to the hospital's edible water source to make the hospital staff faint and successfully subvert the hospital's pattern: the original medical staff
Now he was reduced to a patient in captivity; newgate was suddenly on a mission to rescue all the hospital staff who were being held.
But Rambu seems to be a sane normal man and he was once a war medic who wanted to bring lamb down, or rather treat Lamb, leaving Newgate unable to do anything for a while. Benjamin, the real director of the hospital, learns that Rambu's medical history is hidden in the liquor cabinet, so Newgate steals Rambu's medical history and learns that Rambu has shot and killed five crippled soldiers during the war, because he can't use medical treatment to alleviate their injuries and can't bear to see patients being tortured, this memory becomes a shadow that he can't travel through later in his life, and has been stimulating his brain.
Newgate begins planning to save everyone on the night of the 20th century celebration, but that night Newgate tries to inject a drug into the champagne they drink and is discovered by Finn (who is also a patient) in charge, and Bran also knows that Newgate has learned the secret they are hiding, so he wants to torture Newgate. Although tied up, Newgate was already prepared, and when Bran was about to torture him, he tricked Bran into asking him to take out the photo of Eliza in his jacket pocket and give it to Eliza, which was actually a photo of the teenager that Bran had shot and killed that Newgate found, and Newgate knew that this would stimulate Bran and also treat Bran.
Eliza saves Newgate as bran, stimulated by his memory, runs out of the hall, and Newgate steals Finn's dungeon key to let Eliza rescue everyone in the dungeon. After recovering from everything in the hospital, Newgate wants Eliza to fly away with him, but Eliza says that Newgate is a normal person who should not live with a patient like her. Finally, Newgate tells Eliza a truth that everyone doesn't know: he's not Actually Dr. Newgate!
It turns out that when Eliza was taken to the Psychiatric Open Class by Professor Newgate at the beginning of the film, the young man disguised as Newgate was actually the second patient to appear in the open class, and he fell in love with Eliza at first sight, so he carefully planned to steal Newgate's identity certificate and find the mental hospital where Eliza was located, starting through the line in the film: I'm come for you.
The film ends with the hero and heroine happily together, drinking red wine and provoking a dance in a noble garden. Although the plot of this film is not profound, after watching it, I have to admire the ingenuity of the plot concept, which is completely using charm to lead the audience's nose. Whether it is the retro style of the 19th century or the very connotative interpretation of the gods between the characters in the play, it is very attractive to the audience's attention. Finally, I personally feel that many of the extreme and cruel spiritual treatment methods that appear in the film, as well as the series of counterintuitive and moral examples of the hero and heroine who were originally normal people but were criticized by medicine at that time as mental patients, should indirectly satirize and lash out at some uncivilized and unfair historical facts that occurred at the beginning of the European psychiatric field at that time.