Okay, here is an English introduction to the plot of "调音师" (The Tuner):
Plot Introduction:
Tuning Fork (also known as The Tuner) tells the story of a brilliant but reclusive sound engineer, Ravi, who is completely blind. He possesses an extraordinary ear and possesses a unique talent for identifying and fixing intricate sound systems. Ravi works from his isolated home, meticulously crafting soundscapes for various clients.
His quiet life is disrupted when his younger sister, Aarav, arrives seeking refuge. Aarav has run away from home due to personal issues, and Ravi, feeling a sense of duty, agrees to take her in. This brings a new dynamic and series of challenges to his secluded existence.
As Ravi and Aarav spend more time together, a sibling bond begins to form, offering both of them a sense of warmth and connection they have lacked. However, their idyllic bubble is shattered when Aarav's past catches up with them. A dangerous individual, Raghuvir, tracks them down, revealing a dark secret about Aarav's family history and Raghuvir's connection to it.
Raghuvir holds crucial information about Aarav's mother and has a vested interest in keeping it hidden. He forces Ravi and Aarav into a dangerous situation, compelling them to leave their safe haven and venture into the unfamiliar world of Mumbai's bustling city to uncover the truth about Aarav's past and her mother's fate.
The film follows Ravi and Aarav as they navigate the complexities of the city, relying on Ravi's unique sensory perceptions and Aarav's determination to survive. They must confront Raghuvir and his associates, solve the mystery surrounding Aarav's family, and ultimately fight for their freedom and future.
The story weaves themes of brotherhood, survival, sensory perception, and the quest for truth against a backdrop of intense drama and high-stakes action.