When the family was in crisis and her sister fled the wedding at the last minute out of fear of the "wife-murder rumors," the resilient nurse Lily was forced to substitute-marry Dominic, the cold-blooded, brutal mafia godfather. On their wedding night, this demon who made everyone tremble handed her a cup of "poison wine" and laid down a deadly gamble: "As long as you fall for me within thirty days, the toxin will trigger and kill you." To stay alive, Lily swore she would never lose her heart. Yet within the danger-ridden gang manor — under pressure from the elders and bullying from her vicious ex — Dominic transformed into the ultimate overprotective husband, time and again blocking in front of her, even holding her hand to teach her to shoot in self-defense. Under his paranoid doting and the extreme push-pull between them, the heart-rate ring on Lily's wrist went into frantic alarm, mercilessly betraying her runaway heartbeat. As the death countdown closed in, his "ex-wife," who had faked her own death, returned with a gun in hand, hungry for revenge! In this love game staked on life itself, which is deadlier — the poison, or the demon's temptation?
