When Kim Junmyeon finally find the love of his life and going to married his first love Zhang Yixing, he started becoming lost on his daily life and forget one things to another. Junmyeon come face-to-face with a devastating diagnosis:early-onset Alzheimer's disease. He struggles to stay being himself as long as possible, but he hopelessly aware that his beautiful memories with Zhang Yixing are disappears more and mo

A story about the fate of two people.

“Where did it go wrong?” Took the perspective of Wu Yifan where the love of his life, Kim Junmyeon, little by little stolen by his little brother Yixing.