故事背景为在炎热的夏天，有一只双目失明的小熊想给辛苦劳作的妈妈买一个大西瓜。于是，第一次独自出门的小熊开始了它对世界新的认识…… The background of the story is that on a hot summer day, a blind bear wanted to buy a big watermelon for her hardworking mother. So, the bear who went out alone for the first time began his new understanding of the world …