In the sixties, Harry Stein was the foremost authority on cannabis, writing a book on indoor cultivation and inventing thirteen different hybrids. Nowadays, he stays straight to keep joint custody of his daughter and works as a small-time PI. But when a crop of "orchids" goes missing and a client's shampoo is pirated by a former lover, Stein must re-enter the haze he thought he'd left behind, traveling between LA and Amsterdam to solve the mysteriously related cases.