After an orphan girl, Jiang Sheng, had a one-night stand with her boss, Li Tingyan, she ran away in panic, not wanting her best friend Lin Xiaoxiao to be mistaken for Li Tingyan because she left behind her resume. As a secretary, Jiang Sheng avoids and is attracted by the pregnancy. When he wants to express his pregnancy, he is surprised to see his best friend become his girlfriend, but he has no choice but to do so. Fortunately, Li Tingyan discovered the truth, and then the two of them dealt with each other like a cat and a mouse, growing from enemies to deep love, and finally joined hands.