Farah’s little brother is in the hospital with a heart problem that needs surgery, so her parents send sixth-grader Farah off to stay with her grandmother in a retirement condo in Florida; Sitti Fayrouz does not speak much English, has a lot of rules, and does not understand Farah’s interest in geology, so Farah is not happy with the move–but despite being the only child in the community, Farah finds that the people are nice, and despite getting off to a bad start (she accidentally dumped a soda on his lap) she forms a friendship with Dr. Fisher, who shares her interest in science.
