Audrey Covington's parents are the textbook definition of strict--they don't let Audrey stay up late or watch scary movies, and they definitely don't let her go anywhere unsupervised. Audrey knows it's best to just accept the way it is. But her friends decide her parents' rules are getting in the way of all their fun and unceremoniously disinvite her from their annual start-of-summer slumber party so they aren't tied down by boring Audrey.

Now Audrey is stuck helping her parents move her former-movie-star grandmother into a luxury retirement community. When she finally manages to sneak off to her parents' car to check her phone, her grandmother climbs into the driver's seat and speeds off--not realizing Audrey is still in the back seat! After startling each other, they come to a deal: Audrey promises not to tell her parents where her grandma is if Audrey can join in on one last grand adventure--no rules allowed. But as the two make their way across Hollywood, they realize that the life they think they want might not be what they need.