As an S-Class agent at the top-secret intel firm Vulture, Adrian "Killy" Rosebarton (Codename: Uno) is the master of seduction, able to charm secrets out of literally anyone regardless of age, gender, or profession. But when he sets his sights on his newest target, Lorenzo “Loren” Stefano, things take a rotten turn. No matter how hard he flirts, Loren just won’t bite - and Uno’s pride (and mission) are about to crumble. If one thing is certain, it’s that this is no ordinary mark. This one’s a bad apple: poisonous if swallowed, impossible to spit out, and dangerously tempting.