When Love Walked In (Chinese: 爱情闯进门; pinyin: ài qíng chuǎng jìn mén) is a 2012 Chinese-Taiwanese co-produced television series starring Victoria Song of f(x), Calvin Chen of Fahrenheit and Zhou Mi of Super Junior-M.[1] The series premiered on GTV on 27 August 2012.

Young, talented, and handsome Qin Yujiang (Calvin Chen) receives orders to look for Chairman Yuan's long lost granddaughter, Shen Yayin (Victoria Song).

When her father died, Ya Yin dislikes her grandfather as she feels that he has ruined her childhood happiness and was part of the cause contributing to her father's death.

Ya Yin's guardian plotted a plan for her own daughter, Yu Ru (Ya Yin's cousin) to impersonate as Ya Yin to dupe Chairman Yuan into thinking that she is actually his long-lost granddaughter.

Yu Jiang gradually enters Ya Yin's heart but refuses to admit his love for her because she's Chairman Yuan's granddaughter.