The female lead was arranged by her family to be engaged to the male lead, but she resisted the engagement because she longed for her childhood sweetheart. To escape the marriage, she hid her identity and applied for a job under an alias, unexpectedly becoming the male lead's assistant. The male lead was also searching for the childhood friend from his memories but failed to recognize the female lead in front of him. As they worked together, feelings gradually developed between them, though the female lead remained unaware that the male lead was her fiancé. It wasn't until a family gathering that she was shocked to discover her boss and her fiancé were the same person. After navigating misunderstandings and external obstacles, they eventually unraveled the mystery of their identities, confirming that they were each other's long-lost childhood companions, and found their happy ending together.
