Kitty's owners are taking a week off and leaving Kitty and Puppy at home with Uncle Murray. It isn't long before Uncle Murray is driven to near madness by shenanigans of epic proportions.

Frank Adler is a single man raising a child prodigy, his spirited young niece Mary, in a coastal town in Florida. Frank's plans for a normal school life for Mary are foiled when the seven-year-old's mathematical abilities come to the attention of Frank's formidable mother Evelyn, whose plans for her granddaughter threaten to separate Frank and Mary.

Kat is reluctant to visit her Uncle Vic Frankenstein because of all the rumors about him. People in the small town where he lives say he's a mad scientist like his great-grandfather, Victor Frankenstein, who created a monster that came alive and terrorized the town. But Kat is relieved to find that even though he lives in a dark, old castle-like mansion, Uncle Vic is a quiet, gentle man, a scientist interested in building robots with artificial intelligence....