Cha Geon-moo' (Soo), who infiltrates the after-party of rich kids from influential background in order to find clues about Red Diamond ...During the look out he encounters 'Yeon Tae-oh' (Gong), the disowned youngest son of the Yeonseon Group and a genius racer getting drugged by some trashes so he intervene in order to save him & both ended up having sex .. Geon-moo leaves thinking it might be onetime thing but things went totally opposite of what he expected ..