Plot

Debbie Ocean gathers an all-female crew to attempt an impossible heist at New York City's annual Met Gala.

Following her release from prison, Debbie Ocean, younger sister of the late Danny Ocean, meets with her former partner-in-crime Lou to convince her to join a heist that she planned while serving her sentence. Debbie and Lou assemble the rest of their team: Rose Weil, a disgraced fashion designer who is deeply in debt with the IRS; Amita, a jewelry maker and friend of Debbie's who is eager to move out of her mother's house and start her own life; Nine Ball, a computer hacker; Constance, a street hustler and pickpocket; and Tammy, a profiteer and another friend of Debbie's who has been secretly selling stolen goods out of her family's suburban home. Debbie plans to steal the Toussaint, a $150 million Cartier necklace, from the Met Gala in three-and-a-half weeks, and use Met Gala co-host Daphne Kluger, a famous actress known for her long neck, as an unwitting mule who will wear the necklace into the gala.—mediaknite

Having all the time in the world to iron out the details of her ambitious next project, charismatic con artist Debbie Ocean, Danny Ocean's younger sister, contacts her former accomplice Lou to lend her a hand. And after serving a five-year stint in jail, Debbie picks up where she left off and assembles an all-female dream team of experts to pull off her $150-million magnum opus: steal Cartier's radiant Toussaint diamond necklace adorning the swanlike neck of the renowned actress, Daphne Kluger. But in the upcoming Met Gala, all eyes will be on Daphne and her exquisite necklace. How on earth will Ocean's Eight manage to snatch it in plain sight?—Nick Riganas

In prison, Debbie Ocean (Sandra Bullock), younger sister of the late Danny Ocean, attends a parole hearing and vows not to meet any person with a criminal background, if she is released. This includes most of her extended family and Debbie calls Danny a criminal. Debbie is released from prison, and she immediately goes to a high-end retail store and steals many items by pretending to return them, and then when the counter girl refuses the return without a receipt, she simply walks out of the store with them.

She then goes into a high-end hotel, overhears a couple checking out and then calls in to extend their reservation by a day. Then she orders the maid into the room by calling reception and walks into the room while the maid is still cleaning up. She then unpacks and spends the day and night relaxing in the hotel room.

A day or two later, Debbie meets with her former partner-in-crime Lou (Cate Blanchett) to convince her to join a heist that she planned while serving her sentence. Lou is running a bit scam by mixing water in vodka bottles that she serves in her bar. While Debbie is visiting Danny Ocean's resting place at a local mortuary, the elderly Reuben (Elliot Gould) appears and tries to talk to her to back out from her planned job, but Debbie has made up her mind.

Debbie and Lou assemble the rest of their team: Rose Weil (Helena Bonham Carter), a disgraced fashion designer who is deeply in debt with the IRS; Amita (Mindy Kaling), a jewelry maker and friend of Debbie's who is eager to move out of her mother's house and start her own life; Nine Ball (Rihanna), a computer cracker; Constance (Awkwafina), a street hustler and pickpocket; and Tammy (Sarah Paulson), a profiteer and another friend of Debbie's who has been secretly selling stolen goods out of her family's suburban home.

Debbie plans to steal the Toussaint, a $150 million Cartier necklace, from the Met Gala in five weeks, and use Met Gala co-host Daphne Kluger (Anne Hathaway), a dim-witted and snobby actress, as an unwitting mule/accomplice who will wear the necklace into the gala. After the team manipulates Daphne into choosing Weil as her stylist (by setting up Weil's meeting with Daphne's rival for met gala showcase), Weil and Amita go to Cartier to convince them to let Daphne wear the Toussaint, as well as surreptitiously digitally scan it to later manufacture a zircon duplicate.

Nine Ball works on creating a blind-spot on the museum's security cameras to move the necklace. Tammy secures a temporary coordinator position at Vogue and gains access to the gala's seating plan, as well as getting Lou hired as a nutritionist for the event. Debbie hunts down her ex-boyfriend Claude Becker (Richard Armitage), an art dealer who ratted her out to the police when they were discovered for art fraud, which led to her arrest and imprisonment. Debbie manipulates Daphne to invite Becker as her date to the gala. Lou realizes that Debbie is out for revenge on Becker, but Debbie reassures her that everything will be fine.

Weil discovers a flaw in the plan: The Toussaint can only be removed using a special magnet carried by the bodyguards hired by Cartier. Nine Ball enlists her younger sister, Veronica, to build a similar magnet in time for the gala. As the gala begins, Daphne consumes soup that Lou spiked, causing her to vomit in the restroom, where Constance takes the necklace. When the necklace is discovered to be missing, the museum is evacuated and searched; Tammy "finds" the duplicate necklace in order to end the search. Meanwhile, Amita retrieves the real necklace and begins disassembling it. She retools it into several pieces of jewelry and gives them to Constance to slip it to each member of the team. One of the real diamonds is planted on Becker.

Soon after the gala, the fake necklace is identified when returned to Cartier, and John Frazier (James Corden), an insurance fraud investigator, is called in. Frazier, who has a history with the Ocean family, notices Debbie's presence and suspects her involvement in the heist, but her careful presence on the gala's video footage gives her an unbeatable alibi. Debbie assures Frazier that she does not know where the necklace is, but she may know where part of it is. She negotiates with him to hand over the thief as well as a part of the necklace.

After the heist, Daphne joins the ladies, revealing that she already knew about the robbery by analyzing their actions. Dropping her dimwitted persona, Daphne is revealed to have been in on the plan, tipped off by Weil's bad acting, and Debbie and Lou invited her in to keep her from ratting them out. She asks for the eighth cut in exchange for saving them from jail.

Daphne visits Becker for a romantic evening, where she finds the diamonds planted on him by Debbie during the gala and sends a picture to Frazier so that he can obtain a warrant to arrest Becker for stealing the necklace. To further frame Becker, Debbie sells pieces of the necklace to actresses disguised as elderly socialites, who in turn sell the jewelry and deposit the money into an account in his name. Becker is arrested.

As the eight women celebrate their victory, Daphne asks Debbie and Lou how they each made so much money from the sale of one necklace. Lou reveals that while the gala was being evacuated, Lou and "The Amazing" Yen replaced a Metropolitan Museum of Art display of royal jewels loaned by European royal families with replicas assembled by Amita, escaping with more gems even more valuable than the Toussaint.

Each member of the team goes their separate ways with their money: Amita goes to Paris with a man she met on Tinder; Weil pays off her debts and opens her own clothing store; Constance buys a spacious loft in the city and becomes a YouTuber; Tammy expands her business in selling stolen goods; Nine Ball opens a pool bar; Daphne becomes a director; Lou goes on a cross-country road trip; and Debbie returns to Danny's grave to raise a toast to him with a martini in his honor.