Upon the reopening of the opera house where her mother was murdered, a teen and her friends become the targets of a deranged killer dressed in a clown costume.

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.