Transmigrating into a cannon fodder female supporting role destined for a tragic death, Bian Jiuyue enters the vampire academy in place of her elder sister, intending to rely on the system to accumulate enough sweetness points and rewrite her destiny. Who would have thought that right upon enrollment, she gets dragged into a seven-day survival game set up by seven pureblood highnesses! Relying on her wisdom to resolve crises, she counter-attacks to become the executive of the butler corps. Yet when the seven highnesses gradually fall for her, even proposing embrace and partner relationships, she publicly rejects them! From a cannon fodder manipulated at will, to making the seven highnesses obediently take orders from her.