A cat lover (Lana Turner) kills her husband, blackmails her lover (Trevor Howard) and torments her son (Ralph Bates).

A kitten who is being tormented by a bulldog finds a savior in a black cat (from the "Black Cat Bad Luck Company") who merely has to cross the dog's path for something very unlucky to happen to the bully.

Xiaolong lives together with his grandfather and his cat in a little town in rural china. After graduating from elementary school, he plans to visit the city's middle school together with his two best friends Lele and Meimei. But Xiaolong's father wants him to move to Shanghai and visit a school there. Xiaolong doesn't want to leave so he runs away with his cat, and finds shelter on a deserted roof.