After killing the big boss who ordered the death of his wife, Shawn realized the killer who actually pulled the trigger is still out there. The identity of the true murderer is unclear. Depressed and defeated, he retires and drinks his problems away. However, his friend and former partner convinces him to get back into the game in hopes of finding clues to his wife’s death. In the meantime, he gets paid to take out kidnappers, gangsters, and robbers as a secret assassin for the government.