It will be a long night for students and chaperons at the Opal Ridge High School 'Annual Overnight Bash'. While usually the worst crime is teenagers sneaking a hurried kiss in the dark hallways, or the occasional swig of snuck in alcohol, that's no reason for everyone to keep their guard down. Opal Ridge is a wide campus, surrounded by a forest and a high fence, which means that getting in and out requires a long drive up the empty road before you make it back to anyone who can hear your calls for help.