To escape the crushing weight of inheriting the continent's ultimate superpower, brilliant heiress Vivienne Erewhon flees to the neighboring empire to start a "vacation" merchant guild—accidentally tanking their local economy with her bottomless secret budget. While her doting father and a stressed-out knight back home frantically cover her tracks to keep her feral younger brother from declaring war, Vivienne’s booming business immediately draws the attention of Castina's dual pillars. Now, she must navigate a high-stakes corporate chess game, using a benevolent Crown Prince’s sponsorship to hide from a freezing, ruthless Duke who treats her mysterious enterprise as a top national security threat.