Dou was managed in grandpa's home. Every day, she is thinking about home, but mother is too busy to take her. Because of Grandpa's inability to make KFC for Dou, they have a quarrel.
After grandpa takes Dou out to look for KFC, the relationship between them changed. That day, mother finally came to take Dou home. When Dou was thinking about bringing KFC to grandpa next time, grandpa suffered something bad.