Lucy, the assistant, accidentally sent an ambiguous message to CEO Arthur, causing an awkward public embarrassment in the office. Catherine, a wealthy heiress who has a crush on Arthur, repeatedly bullies Lucy, yet Arthur always comes to her rescue. The two slowly develop feelings for each other and confirm their relationship.
Burdened by family pressure, Arthur is forced to follow his elders’ arrangements to marry Catherine, so the pair break up heartbrokenly. After the breakup, Lucy drowns her sorrows in alcohol, while Arthur pines away and pretends to be sick by refusing food. His devotion moves his parents, who finally relent.
In the end, Arthur summons Lucy under the pretext of his illness. He takes out a ring to apologize and proposes to her, and the two finally get to stay together as they wished.