A Cowherd in Paradise chronicles the remarkable lives of Wong Guey Dang (1902–1983) and Jiang Tew Thloo (1911–2002). Ah Dang was born into an impoverished family and sold as a child. In 1921, his adoptive father paid a five-hundred-dollar head tax to send Ah Dang to Canada. Eight years later, driven to create a family of his own, Ah Dang returned to China, where he chose Ah Thloo as his bride from a matchmaker's photo.

As a child, Ah Thloo worked as a cowherd and from the age of six was responsible for her family's fortune—their water buffalo. Ah Thloo not only became a wife and mother, but also grew to be a courageous defender against invaders and a champion of the weak.

Married for over half a century, the couple was forced to live apart for twenty-five years because of Canada's exclusionary immigration laws. In Canada, Ah Dang became a successful Montreal restaurateur; while in China, Ah Thloo struggled to survive through natural disasters, wars, and revolutions. A Cowherd in Paradise is the moving tale of one couple's search for love, family, and forgiveness.