Encounter is a kind of fate, but for some people, an accidental encounter that is inevitable is an eternal evil.
If he hadn't met him, Weiyang might have kept the promise he made to his master for the rest of his life, staying in the mountains isolated from the world and remaining as pure and innocent as a young butterfly.
But their meeting is a fate that cannot be avoided, escaped, or avoided.
Keeping the promise to the Master means the annihilation of the dream of traveling around; realizing the dream of traveling around the world means betrayal of the Master who was kind and reborn...
How to choose between the promise of not regretting when you were young and the endless yearning when you are older?