"The Unknown Love of the Face-Blind Girl" tells the story of a girl named Lu Hui, who is born with severe face blindness and is used to keeping a distance from others. Lang Chengzhou, an international exchange student at Decheng University, rescued Lu Hui, who was suspected of plagiarism, on his first day back to school. Unexpectedly, Lu Hui "did not recognize handsome men three times she met him", which made him fall into deep self-doubt. Lang Chengzhou vowed to make Lu Hui fall under his charm, but was moved by Lu Hui's frankness, sincerity, optimism and kindness, and fell in love with him in the process of approaching Lu Hui. Lang Chengzhou, who was fully fired, launched a fierce pursuit of Lu Hui. After discovering the secret of Lu Hui's face blindness, he turned into a knight with overflowing boyfriend power to protect Lu Hui, and tried his best to make Lu Hui, who was face-blind, remember him. Unknowingly, he has become a special person in Lu Hui's eyes. As if it was secretly guided by fate, the two people who had a long history fell in love, and a love drama with many twists and turns but already destined to begin was staged.