When the 1989 "one-hit-wonder" glam-metal band "Sonic Grave" embark on a trip to Coachella in hopes of a comeback, their peyote trip pit stop in Joshua Tree incites an "unworldly" vicious attack, and they must "rock" themselves out of harms way.

A weekend trip to the woods for a bachelorette party turns deadly when a nearby train accident causes a chemical reaction that overtakes the secluded valley. But waiting out the disaster inside could prove to be just as dangerous as being outdoors.