That year, 15-year-old Cheng Xiangyi accidentally fell into the water, and 19-year-old Fang Yu rescued her. The kiss in the water made this young girl fall in love for the first time. She knew clearly that he was her uncle, but she still couldn't restrain her love for him. But when Fang Yu knew that he liked him, he chose to study abroad, hoping to fade away this feeling through time and distance. But what he didn't expect was that unknowingly, he had already fallen in love with the niece who always loved to cling to him...