After reluctantly completing a forced kiss mission to activate a mysterious system promising to extend her life, Yuna faces immediate danger from Lord Nolan, the ruthless Regent who refuses to spare her despite her life extension. Her father pleads for her safety, but Nolan insists on punishment for her insult. Defeated and desperate, Yuna collapses, prompting urgent medical aid. Meanwhile, an unknown voice reveals a deadly intent to eliminate Yuna's family. Yuna awakens with only one hour of life left, reliant on the glitchy system's kiss-based recharge to survive, setting a tense countdown for her next move.