After a devastating breakup, Hsing becomes emotionally numb, feeling unable to move on. To end his agony, Hsing decides to set out from southern Taiwan to Taipei to demand an apology from his unfaithful ex-boyfriend. But in the bitterly cold northern city, tangled desires bloom like a thorned flower—hurting him in return. While his ex finally offers him an olive branch by expressing remorse with kisses, Hsing just snaps. In that moment, apology, forgiveness, and revenge collide, leading to an irreversible act…