One is a man who is disabled, has lost his dreams, goals and future, and lives blindly without knowing why.
One is a boy who has a hidden illness and no talent, but still holds dreams and looks forward to the future and perseveres.
An opportunity changed time and space. When two lost hearts were intertwined, they gained salvation from fate and began a new and difficult retrograde journey.
(I'm really incompetent at writing copy, so I'll just give it a try.)