After the war, Matt Gordon returns to Singapore to retrieve a fortune in smuggled pearls. Arrived, he reminisces in flashback about his prewar fiancée, alluring Linda, and her disappearance during the Japanese attack. But now Linda resurfaces...with amnesia and married to rich planter Van Leyden. Meanwhile, sinister fence Mauribus schemes to get Matt's pearls.

The title character is a resourceful young man who knows a whole little about a whole lot of things, and who concentrates by playing his saxophone. Clarence ingratiates himself with the wealthy and eccentric Wheeler family, though daughter Cora can't stand the boy.