Becca has often gone with her parents to visit Gran at her rustic cabin by the sea. But this year Becca's mother is expecting a baby, and Becca is sent to visit her grandmother on her own. The prospect of spending time at Gran's--with her peculiar plumbing and ridiculous Scrabble rules--is hardly appealing. Then, on her very first night, Becca finds an oyster full of pearls. One pearl for every adventure to come? Becca desperately hopes so, as much as she longs for a friend to share them with.