When Aref, a third-grader who lives in Muscat, Oman, refuses to pack his suitcase and prepare to move to Michigan, his mother asks for help from his grandfather, his Siddi, who takes Aref around the country, storing up memories he can carry with him to a new home.

Khalid spends his days looking after his uncle's goats. One day he follows the goats higher up the mountain than he has ever been before, only to discover that one of the kids is missing. But he does stumble upon the home of an old man who tells him about the danger faced by the last of the leopards. When Khalid gets home, his uncle angrily sets a trap for the creature he is sure has killed the lost goat. In the following days, Khalid and the old...