Beethoven : 关我屁事?!? 
In a futuristic Britain, Alex DeLarge is the leader of his
"droogs", Georgie, Dim and Pete. One night, after getting
intoxicated on drug-laden "milk-plus", they engage in an evening of
"ultra-violence", which includes a fight with a rival gang led by
Billyboy. They drive to the country home of writer F. Alexander and
beat him to the point of crippling him for life. Alex then rapes
his wife while singing "Singin' in the Rain". The next day, while
truant from school, Alex is approached by his probation officer Mr.
P. R. Deltoid, who is aware of Alex's activities and cautions
him.
Alex's droogs express discontent with petty crimes and want more
equality and high yield thefts, but Alex asserts his authority by
attacking them. Later, Alex invades the home of a wealthy
"cat-lady" and bludgeons her with a phallic sculpture while his
droogs remain outside. On hearing sirens, Alex tries to flee but
Dim smashes a bottle on his face, stunning him and leaving him to
be arrested by the police. With Alex in custody, Mr. Deltoid gloats
that the woman he attacked died, making Alex a murderer. He is
sentenced to 14 years in prison.
Two years into the sentence, Alex eagerly takes up an offer to
be a test subject for the Minister of the Interior's new Ludovico
technique, an experimental aversion therapy for rehabilitating
criminals within two weeks. Alex is strapped to a chair, injected
with drugs, and forced to watch films of sex and violence with his
eyes propped open. Alex becomes nauseated by the films, and then
recognises the films are set to music of his favourite composer,
Ludwig van Beethoven. Fearing the technique will make him sick upon
hearing Beethoven, Alex begs for the end of the treatment. Two
weeks later, the Minister demonstrates Alex's rehabilitation to a
gathering of officials. Alex is unable to fight back against an
actor who taunts and attacks him, and becomes ill at the sight of a
topless woman. The prison chaplain complains Alex has been robbed
of his free will, but the Minister asserts that the Ludovico
technique will cut down crime and alleviate crowding in the
prisons.
Alex is let out as a free man, only to find his parents have
sold his possessions as restitution to his victims, and have let
out his room. Alex encounters an elderly vagrant that he had
attacked years earlier, and the vagrant and his friends attack him.
Alex is saved by two policemen, but is shocked to find they are his
former droogs Dim and Georgie. They drive him to the countryside,
beat him up, and nearly drown him before abandoning him. Alex
barely makes it to the doorstep of a nearby home before
collapsing.
Alex wakes up to find himself in the home of Mr. Alexander and
cared for by his manservant, Julian. Mr. Alexander does not
recognise Alex from the previous attack but knows of Alex and the
Ludovico technique from the newspapers. He sees Alex as a political
weapon, and prepares to present him to his colleagues. While
bathing, Alex breaks into "Singin' in the Rain", causing Mr.
Alexander to realise that Alex was the person who assaulted him and
his wife. With help from his colleagues, Mr. Alexander drugs and
locks Alex in an upstairs bedroom, Beethoven's Ninth Symphony
playing loudly from the floor below. Alex is unable to withstand
the sickening pain and attempts suicide by throwing himself out the
window, falling unconscious on the ground.
Alex wakes up in a hospital with broken bones. While being given
a series of psychological tests, Alex finds that he no longer has
an aversion to violence or sex. The Minister arrives and apologises
to Alex. He offers to take care of Alex and get him a job in return
for his cooperation with his election campaign and public relations
counter-offensive. As a sign of goodwill, the Minister brings in a
stereo system playing Beethoven's Ninth. Alex then contemplates
violence and has vivid thoughts of himself having sex with a woman
in front of an approving crowd, thinking: "I was cured, all
right!"
https://en.wikipedia.org/wiki/A_Clockwork_Orange_(film)
