A 24-year-old woman traveled to a parallel world and met her 18-year-old self. The world they live in is the same, but the 18-year-old girl has a completely different personality. That girl is the sun. While she shines, she also gives light to others. She was originally nothing, but because of that girl, she became the beautiful moon in the sky. "Parallel Time Travel: The Sun and the Moon Shine" is a legendary story of two women, giving birth to forbidden love in the creation of brilliance. Is there anyone in this world who understands and loves himself better than himself?