On the summer finale, "A" targets the girls once again as they attend an upscale camping trip for one of their friend's birthday party and they fear that "A" may want to crash the fun.
Aria begins to receive messages from someone other than A, bringing tension up to her home. Meanwhile, the girls get some killing information about Toby that some people would die to get their hands on.
Tired of being harassed por "A," the girls decide to put a stop to the anonymous emails and text messages por blocking all unknown users. But even with the mysterious ghost no longer looming over their heads, the girls’ problems are far from over.