Olivia plans to spend her summer in the Catskills, binge-watching horror movies and chatting with her online friend Elm, but things get complicated when she sends Elm her best friend's picture and she runs into the last person she thought she would ever see in real life.

Penny joins her rock-star boyfriend on the road in Europe. When Noah invites Penny on his first-ever European tour, she can't wait to spend the summer with her rock-god-tastic boyfriend. But, between Noah's jam-packed schedule, less-than-welcoming band mates, and threatening messages from jealous fans, Penny wonders whether she's really cut out for life on tour. She can't help but miss her family, her best friend Elliot, and her blog, Girl Online....

Preparatory school senior Kendall finds more than her reputation in danger when her online identity is hacked, getting her involved with drug dealers, detectives, and others who are not who they appear to be.

For the last several years teenager CeCe Ross has been in a serious relationship with her girlfriend Silvie, enjoying their career as social media influencers with thousands of fans, posting about fashion and relationship goals, and totally abandoning the liberal politics that were the subjects of her original social media profile; than suddenly in their senior year Silvie breaks up with her, and CeCe meets Josh, a new boy who is not interested in...

Seventeen-year-old Kat Sanchez uses photos of a friend to create a fake Instagram account, but when one of her posts goes viral and exposes Kat's duplicity, her entire world--both real and pretend--comes crashing down around her.