After a drunken mistake, designer Song Nanqiao accidentally enters investor Li Yanxiu's hotel room, leading to an unexpected one-night stand. Meanwhile, Jiang Chuyue steals Song Nanqiao's identity and gets engaged to Li Yanxiu. To secure a business collaboration, Song Nanqiao joins Li Group, and she and Li Yanxiu gradually develop feelings for each other—until Jiang Chuyue frames her for plagiarism. Misunderstanding the situation, Li Yanxiu pulls away. Once the truth comes to light, Song Nanqiao and Li Yanxiu reconcile, and he severs ties with Jiang Chuyue. In a desperate move, Jiang Chuyue plots to kidnap Song Nanqiao, but Li Yanxiu rescues her just in time. Song Nanqiao wins an international design award and gains the approval of Li Yanxiu's family. In a romantic public proposal, Li Yanxiu asks for her hand, and they finally find happiness. Jiang Chuyue regrets her actions, and Song Nanqiao forgives her as they move forward to pursue their dreams.
