Don't Mess With My Grandson

When summer vacation ends, rural grandmother Li Yuzhen brings her grandson Tuan Tuan to the city to start kindergarten. But Tuan Tuan is bitten by a dog and left fighting for his life, so Li Yuzhen knocks the dog out to save him. The dog's owner turns out to be Tuan Tuan's stepmother, Ruan Yingying, who not only demands that Li Yuzhen pay with her life for the "Japanese dog" but even shouts that the child is better off dead early, delaying Tuan Tuan's treatment. Ruan Yingying then refuses to pay the medical bills and threatens to have her wealthy husband smooth things over. Unable to reach her son Chang Boji, Li Yuzhen has no choice but to call in Tuan Tuan's biological mother, Sheng Qingtian—only for Ruan Yingying to publicly humiliate her. When Chang Boji finally arrives, he first scolds his ex-wife, but once he sees that the injured child is his own son, he flies into a rage and throws Ruan Yingying out on the spot.