Six year ago, Cool (Ekin Cheng) went to Thailand to collect money from a Thai gang for his own gang, leaving his girlfriend Helen (Karen Mok) behind.

• 九龙冰室--前黑社会成员康哥（林雪饰）以其兄弟九纹龙（郑伊健饰）名字命名的茶餐厅。