When 17-year-old Kelly (Singer) hits the town for a wild time with her friends, she isn't expecting to meet Hollywood's hottest "it" guy, Christian Booth (Arnaud). After a night of intense flirting, Kelly assumes that she'll never hear from him again, but she is happily surprised when Christian begins texting her.

Despite their age difference, Kelly is smitten with her new crush. Even after Kelly's father, Rick (Franco), discovers their relationship and forbids Kelly from seeing Christian, nothing will stop her from being with him.

But soon Kelly discovers that Christian's adoration is turning into a dangerous obsession as the truth about his past slowly comes to light.