After another death to cover up the incident on the island occurs, Matthew is determined to use the Seven to find the mastermind behind it all. Meanwhile, another suspicious letter arrives for each of the Seven with their darkest secrets, causing chaos within the group. They come together to form a plan and go after Chairman Bang, who they learn is still alive.

The seven criminals find Ji A's dead body at her place and straight away realize K is behind it. While they are in a panic, Jin Mo gets a phone call from K. Meanwhile, Matthew decides to take everything away from those seven criminals and reveal their crimes to the public, one by one.