Mackenzie Ryder, a 15 year old starting as a Sophomore, gets an invite to a junior party from her good friend Luke Parker. Her and her best friend Courtney Johnson, her friend since birth, accept the invite and head on their way. Mackenzie wanders around and finds herself next to Zach Bailey a double-sided junior who can mix with the teachers and mingle with the students. After she opens up to him and he lets her in, shortly after Courtney gets a worried text from Mackenzie and informs Zach about an attack on mackenzie, they try to rescue her while their lives are on the line.