Nisha is cramped in the backseat of a car driving across London with Sam and her friend Andrea, who appears seriously ill but cheerful.
Andrea teases Sam about an affair; Sam denies it but admits to kissing someone.
Nisha observes Sam's tender interaction with Andrea and reflects on her own past, feeling a pang of jealousy.
Nisha's anger about Sam borrowing her shoes and giving them away is juxtaposed with doubts about whether the mix-up was intentional or an accident.
The group arrives at Global Cat Foundation, a charity shop where Sam's daughter donated the shoes, to Nisha's dismay.
In the shop, they discover the shoes are not on display and may be in storage. The two search unsuccessfully.
Sam tries to ask the shop assistant about the shoes but Nisha takes over, demanding to see the shoes donated the previous day. The store denies liability for sold items.
They learn the red Christian Louboutins have been sold; the shop refuses to share the buyer's information, citing data protection.
Andrea fakes a collapse in the shop, creating a diversion for Nisha to find and steal the buyer's details from the ledger.
Outside, Andrea admits her collapse was an act and they decide to track down the buyer of the shoes.
Sam reflects on her troubled personal life, questioning if her actions amount to cheating on her husband.
The group arrives at the buyer's address, debating ethical ways to retrieve the shoes, deciding against breaking in.
They witness the shoe buyer cruelly throwing a cat in a bin, tipping the group's moral compass towards taking action.
At Jasmine's, a teenage girl, a strategy session takes place to reclaim the shoes. Sam, Nisha, and Andrea meet Jasmine, who offers to help.
The evening turns into a bonding session over snacks, stories, and shared tasks, with everyone chipping in on Jasmine's ironing job.
Finally, despite initial hesitations, they come together with a plan to recover Nisha's shoes without resorting to violence or illegal acts.
Sam returns home to her sleeping husband, filled with the events of the evening and a refusal to discuss their issues.