Sheriff Vaines and his deputy Rios bring along the amnesiac Sarah and three pothole cave specialists – Dan, Greg, and Cath – to find the missing women.
The group discovers Rebecca's corpse near the entrance, causing Sarah to experience flashbacks of previous events before her escape.
As a result, part of the cavern collapses and traps Cath under a pile of rocks, separating her from the rest.
She runs into Greg; they escape from another crawler and find Samantha's body dangling from the ceiling across a chasm.
Juno then leads them to a feeding pit, which she claims has a passage to the surface that the crawlers use to gather food from above ground.
As crawlers approach them, Juno orders Rios to cut off Vaines's hand to save Sarah.
Sarah, Juno, and Rios reach the exit, where they are blocked by a group of crawlers led by their large leader.
They try to sneak past but Greg, who is dying from his injuries, appears and grabs Juno's leg in a last effort to save himself.
When more crawlers arrive, Sarah draws their attention to herself by screaming, giving Rios a chance to escape.
However, she is knocked unconscious with a shovel by Ed, who drags her back to the cave entrance and leaves her there.
As Rios slowly regains consciousness, a blood-covered crawler emerges from the cave with its arms outstretched.
[citation needed] When Dreadcentral.com asked Marshall which of the film's two endings the sequel would be picking up after, he said that it would not be announced until he approved a script.
Ealing Studios was featured on BBC London in June 2008 going behind the scenes of the filming of Part 2.
The film debuted on Blu-ray in the UK by Pathé via 20th Century Fox Home Entertainment on April 12, 2010 as a Region B Locked disc.
The website's consensus reads: "The Descent 2 goes spelunking for its predecessors' unnerving power but never digs beyond surface chills, although this efficient splatterfest contains enough nasty set pieces to sate the gore-prone.
The last half-hour is a tense team scramble to get out, and stay out, but the best move in this above-par shocker is digging right back into the claustrophobic emotional traumas which made Part One so thrilling.
"[19] Variety gave the film a mixed review stating, "Treading closely in the steps of its predecessor in every sense, the sequel has less emotional nuance, shows more of the monsters and opts this time for a less-interesting coed cast instead of the all-femme crew used so effectively in the original.