They had to be put together in order to work so she proposed to Sloane that they work together to defeat The Alliance and raid the CIAs storage facility, which is in an NSA lab in Nevada. Her favour — she simply wants Syd to raid a warehouse in Zurich where Sloane hides the Rambaldi artefacts.

Sark and Francie meet, and he calls her Allison. He says they can't reverse the doubling process because Markovic's lab has been destroyed. Sark says they'll get her back and they kiss.

Will investigates and finds the name Allison Georgia Doren on a list of children involved in Project Christmas. She was supposed to have died in a car accident as a child. Will calls Doren's parents and finds that her body was never identified.

In Zurich, Syd and a team raid the warehouse. Rather than Rambaldi artefacts, they find kitchen appliances stuffed in crates. While transporting the Di Regno heart, Jack is attacked and captured by Sloane, who reveals that in 24 hours the final Rambaldi machine, called "The Telling," will be complete. He speaks almost mystically, referring to a "change." Jack, venomous, pities the void in Sloane's life. For his part, Sloane says they're still friends.

Irina calls Syd and says Sloane switched the crates. She doesn't know where he is but Sark, hiding in a Stockholm club, does. Although Syd doesn't trust her, she and Vaughn go and do, indeed, find Sark. Weasel that he is, Sark quickly offers up Sloane, saying that he and Jack are in Mexico City. Later, from a CIA prison cell, he directs them to Sloane's hideout.

The CIA team storms an office building and engages in a gun battle. Dixon finds Jack. Irina appears, and while she seems to be on Sydney's side, Syd runs after her while Vaughn goes after Sloane. Syd confronts her on the skyscraper's rooftop and threatens to kill her. Irina says that Sloane believes he's been chosen to realise the word of Rambaldi. Only Syd can stop him, Irina says, because she — not Sloane — is the chosen one of the prophecy. "I love you," Irina says, and jumps. Holding on to a bungee cord, she shoots out windows and swings back into the building to escape.

At home, Will finds Provacillium — the medicine needed to counteract the build-up of proteins in the double's eyes — at nearly the same time that Francie sees Will's file on Allison Doren. Having finally discovered the truth, Will makes a quick phone call to Syd and leaves a voicemail identifying Francie as the second double. It's too late, though. Francie attacks Will and she stabs him. He crumples to the floor.

Later, Syd comes home and retrieves her messages while relaxing in the den with Francie. Keeping a poker face, Syd offers Francie a scoop of coffee ice cream. Francie accepts, and Syd knows — the real Francie hated coffee ice cream. Syd goes to her bedroom to get her gun but Francie confronts her before she can. They engage in a no-holds-barred brawl. After much carnage, Syd finally shoots Francie and collapses from exhaustion.

Syd wakes in Hong Kong wearing different clothes and appearing confused and worried. She calls Kendall, who directs her to a safe house. She arrives there and notices a scar on her stomach. Vaughn arrives and appears out of sorts. He says Will is okay. He's shaken, he says, because he thought she was dead. He's come back to explain. Sydney notices that he's wearing a wedding ring. Reluctantly he tells her that she's been missing for almost two years.