In an accident, he and she met and came together; it was also because of an accident that she was no longer in his world, and his appearance was no longer in her mind, or there had never been his appearance, and eventually even his voice was gradually forgotten.
When they meet again two years later, can he remember that there used to be her like that in his world? And can she remember his voice when he appears in front of her? Can those missed seasons be made up for? What will be the ending for him and her?