Thirty-year-old Lu Nian is the age that others think "should settle down". With her parents urging her to get married, introductions from relatives and friends, and worldly outlook, she thought she would enter a "suitable" marriage step by step, until 26-year-old Qiao Ran broke into her life without warning.
An oolong misunderstanding led them to meet each other, and the gears of fate began to turn. Lu Nian didn't expect that one day he would fall in love with a man four years younger than himself; Qiao Ran also didn't expect that the one who vowed to "never fall in love" would shake all his principles for a woman.
They met when each other was most confused and fell in love on the road to pursuing their dreams. Is the four-year gap a gap in the eyes of the world, or is it an insignificant distance between two true hearts?