Based on characters created by Charles Addams, and was the sequel to the 2019 movie, made in the COVID-19 pandemic. At a science fair, Wednesday Addams is set to present her experiment, where she uses her pet squid Socrates' DNA on Uncle Fester to show how humans can be improved (with the side effect of gradually transmutating Fester). However, she is dismayed when she sees her family show up. Nonetheless, her work gets noticed by scientist Cyrus Strange. Back at the Addamses' home, Gomez worries that the children are drifting apart from him and Morticia, so he decides to take them on a family vacation. Before the family, Fester, Thing, and Lurch head on a road trip across the country, Gomez and Morticia are approached by a lawyer named Mr. Mustela; who claims that Wednesday was switched at birth and may not actually be an Addams, but they ignore him. Little do they know they soon get pursued by a mysterious individual who may indeed be an Addams...