An accident made Chen Yuan and Zhang Mubai meet, and the two similar people were attracted to each other. However, young love is too reckless and too fragile, and another misunderstanding caused the two to miss each other for many years. When they meet again, they are no longer the same young man without a story. Is there someone else beside Zhang Mubai? What did Zhang Mubai experience during his absence? Can he still find the only person he wants to protect... (If there is a kind of pure love in this world, it must be beautiful.)