A catastrophic power outage sets free a group of unstable individuals from the Haven maximum security mental institute, allowing them to exact revenge on the psychiatrists who have subjected them to unconventional and disturbing treatments.

Alone in the Dark
Unstable patients, fueled by delusions and a sense of betrayal, escape a mental institution during a blackout and invade the new doctor's home, mistakenly targeting him as the culprit behind the previous doctor's demise.