A traumatic scene that agent x witness 5 years ago,someone killed his 2 bestfriend infront of him,because of that he promised to his 2 dead bestfriend that he will find their killer remembering that made him continue to seek revenge for them even his life is in danger. The case was closed unfinished,they lost hope to find the killer...but then liam decided to re-open the case when someone send a threat to the general's daughter...the one who send the threat turns out to be the killer of his bestfriends. Will he catch the killer this time or another life will say goodbye?