On a late autumn evening in Binhai City, Su Nianqing, a junior at the Academy of Fine Arts, accidentally broke into the cocktail party on the top floor of the Xie Group to deliver an urgent message, and crashed into the arms of CEO Xie Chen. She is a poor designer who is in urgent need of part-time salary to save her father, with stubbornness and purity hidden in her eyes; he is the CEO of Bingshan who was forced to marry by his family. He has severe mysophobia, but he only makes an exception for this "unexpected warm sun".
A "contract couple" agreement was made to solve an urgent need, allowing the two to live under the same roof. Xie Chen restrainedly arranged a dedicated room for her, blocked workplace difficulties, and hid his preference in the courtesy of "maintaining boundaries." Su Nianqing was sober and independent, neither dependent nor blindly obedient. She struggled to grow on the road of design, and gradually understood the gentleness under his cold and hard shell.
From the startling glimpse of accidentally falling into his arms, to the heartbeat that quietly sprouted outside the contract, Shuangjie's persistence and exclusive preference finally made the iceberg completely melt. It turns out that the best love is when he protects her without worries, and she takes off her disguise with him and becomes each other's only "exclusive warm sun" for the rest of their lives.