老爷爷骑车从家里出发，一路上经历各种各种光怪陆离的困难阻碍，他依旧风雨无阻的前进着，爷爷的目的在路上慢慢的被揭晓…… Grandpa rode a bike from home, all the way through all kinds of strange difficulties and obstacles, he is still moving forward, rain or shine, grandpa's purpose on the road was slowly revealed...