Meixiang has been depressed after the death of her husband Abi. One day while sorting out his belongings, Meixiang found a key and followed the clues to find his secret neon light factory and Leo, who claimed to be his apprentice. Mei Xiang and A Bi met and fell in love because of the neon lights. The prosperity was gone, and the old masters could not cope with the changes of the times and changed their careers. Mei Xiang originally wanted to get rid of the factory, but she learned that A Biao had a last wish to rebuild the sign. She and Leo walked through the streets and began to learn how to bake neon light tubes by hand.