In this dazzling prison film, Tim (Chow Yun Fat) and Ken (Tony Leung Ka Fai) are two prisoners going through difficult lessons in their lives.Tim has been a heavy gambler and is sent to prison for killing his wife by accident and Ken, a well-educated, young designer, is imprisoned for accidentally killing a gangster. Ken has great problems adjusting to the harsh prison life and Tim, in his smart and witty way, always helps him out. The two becomes the best of friends.The cruel prison has later transformed the two into different persons realizing that tomorrow is always full of hopes.