Disaster strikes as a specialised team of investigators struggle to find out the truth about a strange monolith which sends out an intercontinental signal.

Dillan Johansen is a disorganized transit authority supervisor suffering from a serious personal tragedy. Dillan's bravery is put to the test the day a major earthquake hits Los Angeles and traps Dillan in an underground tunnel with a handful of subway riders. Dillan works underground to save the panicked citizens from raging fire, rushing water, and a secret cache of toxic chemicals.