A Taiwanese drug mule has his foolproof smuggling method thrown out of whack when he catches a ride with the wrong cab driver, in this highly entertaining caper starring Hong Kong comedy legend Michael Hui.

Critically acclaimed director Chung Mong-Hong's latest endeavour centres on a young man whose plan to reform himself takes a tumble when he, along with a seemingly carefree, innocent cab driver, is kidnapped over the heroin he is delivering.