"It's the summer after seventh grade, and Ruby Chu is feeling more lost than ever. Her best friends aren't speaking to her. She ended the year in detention. Her sister's about to leave for college. Ruby's still grieving her grandfather Ye-Ye when it seems like no one else is. And without Ye-Ye and his annual scavenger hunts across San Francisco, their hometown doesn't really feel like home anymore. Things get worse when Ruby's forced to spend the...