To save her dying brother, Evelyn Vance signs a one-year marriage contract with the city's most ruthless tech tycoon, Killian Sterling.Killian needs a scandal-free wife to secure his position as CEO against his scheming family, while Evelyn desperately needs millions to cover a rigged medical debt. The rules are simple: stay in separate rooms, act deeply in love for the media, and never catch real feelings. However, as family betrayals escalate and dangerous secrets emerge, the boundaries of their transactional relationship begin to dangerously blur.