Two different worlds collide: the wealthy influential people on the one hand and the poor and honest on the other hand. Sin, a wealthy boy had been spoiled by his parents and has never realized the importance of self-dependence and how to become a responsible man. The boy lives his life relying on his parent's wealth and power, making him even more arrogant and pompous. Lud, a mute middle-aged man came from a rural area to be a motorcycle mechanic in Vientiane. His wife worked as a market woman and they had a six-year-old daughter. Though Luds life was simple, his family was warm and loving. One day Lud unexpectedly faces the greatest loss of his life caused by Sin.