This is the fourth book in the Abby South Seas Adventures series.
Having lost the ranch, Abby's family, Luke, Kini, and Duncan all move to the Hawaiian island of Kauai, where Abby's dad and uncle get jobs on a sugarcane plantation.
But the new boss is suspicious, and seems to be friends with a wicked pirate Luke and Abby have met before. Abby and Luke solve several mysteries and learn the true meaning of home.
Tyndale House Publishers