When Love Walked In( Chinese :愛情闖進門; pinyin :ài qíng chuǎng jìn mén) is a Taiwanese drama starring Victoria Song of f(x) , Calvin Chen of Fahrenheit and Zhou Mi of Super Junior-M . It is produced by Shanghai film Co., LTD syndicate ( Chinese :上海辛迪加影视有限公司) and directed by Chen Zhi(陈致)and Han Feng (韩风). It started filming on January 5, 2012.

Young, talented, and handsome Qing Yu Jiang (Calvin Chen) receives orders to look for Chairman Yuan's long lost granddaughter, Shen Ya Yin (Victoria/Song Qian). Because her grandfather tried every means to track her down to search for her and to separate her from her father, she and her father often moved houses and hid away from her grandfather, eventually, her father fell ill and died. Since then, Ya Yin dislikes her grandfather because he has ruined her childhood happiness. Yu Jiang not only eases the tension between them, but he gradually enters Ya Yin's heart. But when their love begins, Yu Jiang backs out because of his love for his childhood friend. Yu Jiang tries to find her, but fails to realize that she has been by his side all along.