Plot

When a mysterious murder takes place at exiled billionaire Ashish Kapoor's birthday getaway, detective Mira Rao must use all her skill to unravel devious motives as the suspects are Kapoor's close family and friends.

Indian millionaire Ashish Kapoor has dumped the banks for twenty thousand Crore's and eloped to London also leaving his employee's with unpaid salary for more then two years.While Ashish enjoys a lavish life in London and has planned his birthday in a remote area in a 500 year old Castle.This birthday is not as usual lavish for him and he has invited only few of his close associates among them arrives one uninvited female guest.Due to heavy storm and breeze bridge coming to Castle is blocked which means there is no exit for anyone until storm calms down.In between crazy weather the party starts and while raising the toast Ashish tells everyone that he is soon going to surrender to Indian government and clear his name which means he will have to surrender all of his properties in London to Indian Government.Ashish introduces the uninvited guest as CBI officer Meera Rao who is come to arrest him and awaiting for Scotland yard who are stuck in storm.The decision creates havoc in the Castle and Ashish has scuffle with his son and goes out to breathe fresh air.But his friend Zara realizes that Ashish has plunged down into the sea leading to his death and body is washed off shore.Mira starts her investigation and finds that Ashish has not committed suicide but was pushed by someone.The investigation points needle to everyone in the Castle as all of them had reason to kill him.—alex.mjacko@gmail.com

Ashish Kapoor (Ram Kapoor) is an Indian businessman who lost 20,000 Crore Rupees in his dream company and fled from India to avoid being incarcerated. His company had over 10,000 employees whose salaries have not been paid for over 2 years. AK has a castle in Scotland, where he is throwing a birthday party, and has invited his close family and friends over for an intimate dinner party. The weather is predicted to be stormy and all bridges in and out of the Island will be closed by the afternoon. The castle overlooks a huge cliff by the sea. Tanveer (Danesh Razvi) is the event manager. The castle has no Wi-Fi and no mobile signal either. The staff has left the castle in view of the incoming storm. Tanveer is handling everything for the night. Tanveer is shown to steal a pen from AK's study.

AK's secretary Kamini/Kay Deb (Amrita Puri) has a crush on him and will do anything for him. AK's wife Tahira is now dead. The industry minister from India Raj Chaudhary is a last-minute cancellation. AK is accused of selling his business in AK Cyber and investing all proceeds into his new business AK Aeronautics, which developed solutions for civilian space travel. The space venture failed spectacularly, and AK vanished from public view. Now he owes Rs 20,000 Crores to Indian banks. AK Cyber employees are committing suicide. The 8th victim is Devika Chellam (Supreet Bedi).

Jimmy Mistry (Rahul Bose) is AK's brother-in-law who could not inherit the company from his father and is jealous of AK for being chosen as the successor. Jimmy is broke.

AK's son Ryan (Shashank Arora) who was neglected in his childhood is now a drug addict. Ryan hates his father because Jimmy has secretly provoked him by telling him that AK had killed his mother. In a fit of rage and revenge Ryan has brought a mysterious girlfriend Gigi (Prajakta Koli) and asked her to wear a yellow gown belonging to his late mother, to shock AK and possibly provoke him to confess his past crime.

Once upon a time AK was in love with Noor Suri (Dipannita Sharma) who is now married to Dr. Sanjay Suri (Neeraj Kabi). Noor was an actress and Sanjay was a plastic surgeon. But Sanjay lost his license and has been jobless ever since. Ishaan is Noor and Sanjay's son and studies at a film school and is filming the entire birthday party bash. The couple are debt-ridden and overwhelmed by AK's favors. When they arrive, AK gets Sanjay to sign some papers. Sanjay hides these papers in his room.

AK's confidante and therapist Zara (Niki Aneja Walia). Zara travels with her dog Rumi. AK's current girlfriend Lisa (Shahana Goswami) and Tahira's cousin (Sasha (Ishika Mehra)) are other guests who arrive at the party. Lisa is 26 years old. Sasha has received notices from her boarding school for not paying her school fees.

Then arrives CBI Officer Mira Rao (Vidya Balan). AK does not reveal why Mira has arrived at the castle. Mira observes that Kay is allergic to sunflowers. A series of events take place. A chandelier falls from the ceiling and narrowly misses AK. Mira observes that Tanveer is not an experienced event manager as she believes bread or cello tape are the best ways to pick up glass shards and Tanveer used neither.

AK announces to his friends and family that he will be surrendering himself to the Government of India. 2 of Mira's Scotland Yard colleagues have not arrived at the castle due to the storm. Only the Scotland Yard have the authority to arrest AK. Zara's dog Rumi drinks champagne meant for AK and dies. Tanveer and Gigi know each other from before. Tanveer knows that Gigi is connected to Devika and Ryan has no clue about this. Noor is angry at Sanjay for signing the papers from AK and wants him to stand up to AK. Mira faints in AK's office. When she revives, AK explains that he was an executive assistant to his father-in-law before he became his successor at the age of 27. Ak stresses that he is not a criminal, he did everything possible to realize his dreams. Ryan slaps AK and says publicly that AK is not his father. AK asks Ishaan to stop recording and Sanjay intervenes to calm AK down. The power goes off and Kay goes to check on the generator. AK lashes out at Jimmy for turning Ryan against him. AK says that even Jimmy's father knew that he was a leech. AK goes out of the castle alone. Mira goes after him but is stuck on the head from behind.

Zara sees AK jumping from the cliff.

Mira gains consciousness and takes over the investigation. The landlines are now dead, and they were working earlier. Mira finds AK's suicide note on his desk. AK's body is swept away by the waves. Mira finds a broken vase in AK's bedroom. She finds a hidden safe in the room, which is empty. Mira declares that AK has been murdered. He was pushed as his body was lying face up. Mira doesn't trust Zara's testimony. She searches all rooms and questions everyone.

Jimmy had hired a law firm to challenge AK's succession to his father. Mira tells Lisa that the necklace AK gifted her is made of cut glass. Zara is very calm even after losing Rumi and AK in a single night. Mira learns that AK was going to hand over Sanjay and Noor's Kensington home over to the Indian authorities as part of the settlement. In their bathroom, she finds the hidden papers that Sanjay signed. Ryan is AK's stepson and not his real son. She finds cocaine in Ryan's drawers. His car keys are missing. He finds Tanveer escaping in Ryan's car. Tanveer crashes the car nearby the castle and escapes into the woods. Mira finds Tanveer dead and Jimmy standing over him. Kay reveals that Tanveer is in fact Tanmay Shah, the sting reporter for a news channel. Sanjay says that Tanveer died from brain injury and rules it an accident.

Sanjay was taking medications, but Mira found one vial missing. She found the vial on the dinner table, hidden under food. The vial had potassium chloride, which is lethal. The same was mixed in AK's drinks, but then the cake was brought in and AK kept the glass aside, where Rumi drank it. Mira reveals that AK was Ishaan's real father. She found a DNA test report that Sanjay had conducted back when he had cancer. Noor says that AK is not Ishaan's biological father and it is Jimmy.

When alone, Mira tells Sanjay that he was laundering AK's black money through his practice. This is why he lost his license. Ak gave him the Kensington mansion as compensation, but now wanted it back and even got Sanjay to sign the papers. But now AK is dead, the papers are missing, and the mansion is back with Sanjay. Mira reveals that Tanveer's hand had an imprint of a pattern of AK's briefcase. Somebody hit Tanveer with the briefcase and Tanveer resisted. Whoever killed Tanveer, has the briefcase.

Mira wants to check all the rooms starting with Sanjay. Sanjay locks Mira in a closet and goes to his room, where he has the briefcase. Sanjay tries to open the briefcase but is stabbed to death by an unknown person. Noor finds Mira in the closet and releases her.

Mira reveals that it was Jimmy who had hit her outside the castle, as he wanted to follow AK alone. Jimmy admits and says that Tahira had cancer but had votes on the board. AK wanted to take the company public, and Tahira resisted that. Suddenly, she was found dead by the doctors. Jimmy suspects that AK killed Tahira. But Jimmy had no proof, and this enrages Ryan as Jimmy had told him that he had solid proof. Mira reveals that Ryan cut the rope that led to the Chandelier falling near AK. Ryan wanted to kill AK. Ryan admits that he brought Gigi to the party and got her to wear Tahira's dress to get AK to confess killing Tahira.

Mira then reveals that Gigi is Tanmay's ex-girlfriend. Gigi is a journalist and she wanted to expose how Devika lost her life due to a Rs 20 Lakhs loan, while AK was partying after defaulting on a Rs 20,000 Crores loan. It was Noor who mixed the Potassium Chloride vials in AK's champagne. Noor says that AK humiliated them at every opportunity and Sanjay was the one who also fixed everything. Kensington mansion was the last straw.

Mira says that Sasha was blackmailing Lisa. Sasha says that Lisa is 34 and not 26. She had no choice as Lisa was getting diamonds, while her school fees were not being paid. Mira reveals that Lisa worked for Raj Chaudhary and kept an eye on AK. Raj had taken a huge risk in helping AK escape from India and didn't want AK to do anything stupid.

Mira says that Sanjay killed Tanmay. The pen in Tanmay's pocket was a spy camera which Tanmay used to find AK's secret safe. Tanmay stole the briefcase, and Sanjay wanted the briefcase at any cost. Kay killed Sanjay and now the briefcase is with her. Zara asks Mira to find Kay.

Mira goes upstairs and in Sanjay's and Zara's rooms. When she comes back down, she finds everybody unconscious. Mira finds Zara escaping with AK's briefcase and confronts her. Zara is AK's sister. A shot is fired in the scuffle. Mira then finds AK in the tunnels beneath the castle. Mira says that the briefcase contained papers to transfer AK's ill-gotten wealth to tax havens, along with a new name, identity and a new life. Mira says that AK planned his own death.

Mira says that Zara was supposed to turn off the lights at the designated time to help AK escape. But Ryan slapped AK and ruined his plan. Zara, unaware of the scuffle, turned off the lights but AK didn't have his briefcase and had to escape. Kay found the tunnel and met AK. AK convinced her to get the briefcase, but Zara found her and killed her. Then Zara was bringing the briefcase to AK, when Mira shot her.

AK fights with Mira and runs with the briefcase to the cliffs. Mira catches up with AK and yanks the briefcase from him. AK loses his balance and falls down the cliffs and dies. The real Mira (Shefali Shah) arrives at the castle with her Scotland Yard team.

Turns out fake Mira was Devika's girlfriend. Mira used to work at AK Cyber and was a top-class hacker. She infiltrated many secure systems and found that AK was about to stage his own surrender. She wanted to get her hands on the briefcase before the real CBI got to the scene. Mira opens the briefcase and shares the entire proof with Indian authorities. Money stolen by AK has been returned to the country.