It follows a Sapphire given to a Captain Michael Crowther by his Burmese wife who he is deserting. When he finally decides to return to them he finds them now out of his reach and so he becomes a Buddhist Monk. However, the Sapphire that now adorns a temple is stolen and so begins an adventure to track down the missing gem.Love and adventure followed Sapphire's trail across half the world...During the morning Captain Crowther stood beside his helmsman at the high wheel on the roof of the steamer. The Second Defile with its monstrous, high cliff, its racing waters, and the unmanageable great rafts of teak wood floating down to Rangoon presented always a delicate problem in navigation. But Captain Crowther certainly knew his business. He edged his steamer in here, thrust a raft aside there, and by lunch-time the hills had fallen back and we were thrashing down the broader waterway to Schwegu. At luncheon Crowther took the head of the table and I found that a place had been laid for me at his elbow. He was a man of thirty-six years or so, and he had the sort of hard, leering, and wicked face the early craftsmen were so fond of carving on the groins and pillars of French cathedrals. I took a dislike to him at my first glance.