Two teenage friends, Toby and Jason, venture into an uncharted cave for a thrill-seeking adventure that quickly spirals into a nightmare. After their rope snaps, they plummet into a deep, dark chamber, cut off from the outside world.

Trapped in the bowels of the cave with no way out, the two friends are forced to confront their growing terror and the oppressive darkness around them. As they search for an escape, paranoia sets in, fraying their sanity.

With time running out, their fragile grip on sanity crumbles, and the cave's isolation turns their friendship into a dangerous, volatile struggle for survival. Desperation mounts as the line between reality and madness blurs, leading to a chilling confrontation that neither of them could have anticipated.

The deeper they descend into the cave—and their own minds—the more they realize that some places are better left unexplored.