Cecil, an innocent college student, accidentally saves Kane, the leader of the underworld syndicate Night Hall. One fleeting kiss makes Kane fall head over heels for him.
Later, Cecil is betrayed by his drug-addicted mother and ex-boyfriend, who collude to sell him to a depraved man. Overwhelmed by utter despair, he tries to end his life—only to be found by Kane, who brings him back to the heart of his criminal domain.
Kane personally trains Cecil in hand-to-hand combat and firearms. The once timid youth transforms into a ruthless, decisive second-in-command of the gang. As tender feelings grow between them, Kane’s noble fiancée suddenly appears. The chains of a political marriage and mounting suspicion drive a wedge between the two lovers.
Hoping to provoke Kane, Cecil enters a sham engagement with the wealthy heiress Sophie. But his plan backfires horribly: the possessive, obsessive Kane locks him up in a basement. With no hope left, Cecil leaps into the sea to fake his own death and disappears without a trace for five years.
Consumed by endless remorse, Kane scours every corner in a frantic search for Cecil, bearing countless scars both on his body and soul. They cross paths once more on a snowy night in the city streets. Having endured betrayal, captivity and a separation that felt like a lifetime apart, they untangle years of lingering misunderstandings and finally embrace each other, mending their broken bond.