Lin Weiyu, a clear-headed female top student from a poor family background, unexpectedly breaks into the class-rigified top chaebol "Old Money Class". Facing bullying and resource blockades from the privileged class, she is neither humble nor overbearing, launching a dimensional reduction counter-attack with modern financial auditing and extreme psychological tactics. From investigating accounts in the stables to expose corruption to the appearance of the bidding bureau, she outsmarts the villains and drives them to bankruptcy.