It all get down with soldierly humanistic discipline expert San (Lee Min-ho) and master sleuthhound Yo (Sir William Wallace Chung) who have got be work as bodyguards-for-hire but to small success since their judgment of dismissal as Interpol officer a twelvemonth ago. When a obscure committee lead them to a hotel room in Inchon, South Korean Peninsula, a terrorist bombardment duly take topographic point and turn the bumbling research worker into wanted suspect. Their informant die at the scene, but the brace besides instantly happen themselves prosecute by a rival grouping of premium hunter.