Nida is a single mother who takes care of her anti-social son who has locked himself in his room for five years. The only way to communicate with her son is to write on a piece of paper and slip it under the door. But, when outsiders start to get curious about what is going on behind the door of her son's room, a series of terrible events starts to happen.
Rang and Peng, Two of the most ruthless criminals break out of a high-security jail to recover the "September's Diamond" which was lost to them when they were caught. They also tried to avenge the people who secretly stole the diamond from them.