After his father was murdered, 18-year-old Hao Nan is emotionally torn. As he copes with his loss, his desire to seek out the murderer also deepens. 

Driven by naivety and his shallow understanding of secret societies, Hao Nan's chance encounter with Ming of Red Luck Gang inspires him and makes him realise that there is a more effective way of dealing with injustice in life, including classmates who are constantly jealous of Hao Nan and always bully him. Soon after, Ming introduces Hao Nan to Hei Ge, the leader of Red Luck Gang. Impressed by ethics and philosophy of the gang, Hao Nan secretly hopes to join it in order to use its influence to avenge his father’s death. However, Hei Ge is reluctant to accept Hao Nan as yet, at least not until he can first prove himself worthy of the gang. 

As Hao Nan gets closer to Red Luck Gang with each passing day, he soon discovers that beneath the façade lies brutal violence and betrayal that are contrary to the glorious and dignified image of the gang. 

Will Hao Nan’s deepened desire to avenge his father outweigh his innermost conscience and dictate his actions?