Three years ago, Charlotte entered a contract marriage with Damian, a chaebol heir she's never even seen, to pay for her twin brother Charlie's surgery. Now, as their contract nears its end, Charlotte disguises herself as a man to take Charlie's place as a secretary at Cross Group—only to end up serving the notoriously cold CEO, Damian himself. As she hides her identity by his side, Damian finds himself inexplicably drawn to his "male" secretary. Neither knows who the other truly is, and as they grow closer, a scheming rival plots to tear them apart…
