Business family "spare heirs" Yooyoung and Jihoon meet as an anonymous one night stand before their blind date seons the next day—that turn out to be with each other! Though they could laugh it off, a spark is ignited. As the two get to know each other, they discover not all is well in either family. Together, the two rewrite what love means and learn to take up space while navigating family secrets and political rivalries that would tear their hard-won happiness apart.