There is a newborn baby in Adams Manor, and Morticia (Anjelica Huston) is overwhelmed by him. Gomez (Raul Julia) hired a nanny Debbie, who is very popular with the Adams family. But Pugsley and Wednesday saw through her intentions. It turned out that she was the famous "Black Widow". She killed her parents when she was a child, and later killed her two husbands for money. But before the children could report Debbie, Debbie had sent them all to summer camp and married Uncle Fester. After marriage, Debbie tried every means to kill Uncle Fester and disguise it as an accident, but she failed every time. Although the summer camp is fun, the children keep making the teacher angry and constantly destroying the atmosphere of the children's games, so that the teacher can send them home early so that they can warn their families: Be careful of Debbie...