Set in the near future, The Bad Batch refers to the exiled criminals sentenced to live in a lawless, cannibal-ridden wilderness. The neon-drenched backdrop of Comfort — a seeming safe society where humans eat rabbits and not each other — doesn't need a backstory. The relationship between Arlen (Suki Waterhouse) and Miami Man (Jason Momoa), however, appears to counteract each character's motive.
In a grim introduction, Arlen is tattooed with a prison number and dumped in the desert. She is abducted and drugged; her limbs are soon amputated and devoured by a group of cannibals. Though she later escapes, she understandably resents those responsible. Months later, she stumbles across a mother and daughter scavenging the landscape. Realizing they're cannibals, she kills the mother and abducts the daughter.
That's Miami Man's partner and daughter. When searching for them, he discovers his partner's corpse, with little indication of grief. He then heads to Comfort in search of the missing child. Fortuitously, he meets Arlen. Unaware she is responsible for her disappearance, he asks her to help with the search. The pair then strike a peculiar friendship. Miami Man is earlier shown to be a ruthless leader of a cannibal clan. He thinks nothing of breaking a woman's neck with his bare hands, despite her begging for mercy. Aware of his background, Arlen doesn't hide the fact she hates his kind.
This setup suggests serious consequences once it's Arlen's abduction of the daughter is revealed, but this reveal never comes. There's little explanation why such an important plot device is left alone. After the daughter goes missing in Comfort, Arlen is determined to find her and reunite her with Miami Man. When finally reunited thanks to Arlen's help, the daughter, for some odd reason, doesn't tell Miami Man that it was Arlen who murdered her mother.
In the end, Arlen rejects the opportunity to join Comfort leader The Dream (Keanu Reeves) in a more-than-comfortable existence, asking Miami Man if she can join him on the outside — a questionable deviation from all earlier behavior.