"Trash" is the eleventh episode of the science fiction television series Firefly created by Joss Whedon. It is the first of three episodes that were not broadcast in the original 2002 Fox run.

Mal's "wife" Saffron convinces him to help her steal a valuable artifact, but the crew of Serenity suspects foul play.

The episode opens in a desert, where a naked Mal sits on a rock, staring into the distance and saying to himself: "Yeah… that went well."

During a cargo transfer 72 hours earlier, Mal meets up with Monty, a war buddy and fellow Browncoat turned smuggler. As Monty's crew unloads cargo, he tells Mal that he's gotten married, introducing his wife Bridget. "Bridget" turns out to be Mal's nemesis Saffron, and a fight breaks out between them. Enraged to learn of Saffron's double-dealing, Monty leaves without her, stranding her on the deserted moon where Mal is waiting for a pickup. Mal orders Saffron to walk away and be left behind, but reconsiders when she tempts him with the prospect of a lucrative heist. Later, Serenity arrives to pick up Mal and the unloaded cargo. Later Mal lets Saffron out of one of the loaded crates in the cargo bay.

In the common room, Saffron describes to the crew her plan to steal a priceless antique laser pistol, the Lassiter, from Durran Haymer, a wealthy collector of Earth-That-Was artifacts. She claims a detailed knowledge of Haymer's security arrangements, but explains that the difficulty lies in getting the weapon off the estate, something Serenity's crew could accomplish. The crew is outraged that Mal has brought Saffron on board, but they reluctantly agree to the plan.

Jayne is assigned to watch over Simon and River and keep them out of Saffron's sight. River worries about the situation, telling Simon she doesn't trust Saffron and that she knows Jayne had tried to betray the Tams to the Alliance. Meanwhile, Wash and Kaylee instruct Mal and Saffron to dump the collectible pistol, once they procure it, into an automated trash disposal unit, which Kaylee can reprogram to have the trash taken to a remote location where they can pick it up.

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