Thirteen-year-old Olivia is excited about going on a road trip back to California with her sister and their uncle and aunt. Their family moved to Tennessee from California three years ago, and the girls had buried a time capsule before their move. Olivia’s big sister Ruth is now 16 and clinically depressed. She has good and bad days and is on medication to manage her depression. Olivia feels responsible for Ruth’s happiness and has a plan to recover their time capsule, while doing a photo project during their trip to remind Ruth of good times and make her just a little happier. But she soon finds out that with mental illness, it’s not always so simple.