This book tells the story of how the little chicken Pipi accidentally spilled water on the monster baby and had to say sorry; the little cat Mimi and the little dog Qiuqiu were playing with a ball and accidentally hit the little girl Youyou with the ball and had to say sorry; the cookies made by her mother were so delicious that Youyou couldn't help but secretly ate the cookies and said sorry to her mother. Youyou and her friends ate the cookies made by her mother and they were so delicious.
本书讲述了：小鸡皮皮不小心把水洒在怪兽宝宝身上了，要说对不起；小猫咪咪和小狗球球玩皮球，不小心把皮球拍到小女孩优优的身上，要说对不起；妈妈做的饼干太好吃了，优优没忍住，偷吃了饼干，向妈妈说对不起。优优和小伙伴一起吃妈妈做的饼干，真好吃。
本书讲述了：小鸡皮皮不小心把水洒在怪兽宝宝身上了，要说对不起；小猫咪咪和小狗球球玩皮球，不小心把皮球拍到小女孩优优的身上，要说对不起；妈妈做的饼干太好吃了，优优没忍住，偷吃了饼干，向妈妈说对不起。优优和小伙伴一起吃妈妈做的饼干，真好吃。
