An argument between Noah and Dixie reveals some trust issues. The family packs up issues of their own and heads for Vegas, in the hopes of setting sister grievances aside.

Charli heads back into the studio to improve her single, but a new guy friend distracts her attention. As Dixie prepares for her album release and tour, her physical and mental health suffer as her and Noah consider a summer apart.

As Charli and her new guy friend face harsh rumors, she makes some exciting moves as she turns 18—both in her love life and with her music. Dixie prepares for her album launch and live performance, but anxiety threatens two years of hard work.