[3] The movie's plot is essentially an extended remake of the original show's episodes, "The Missing Heir" and "The Golden Fleecing".

The movie opens on what appears to be another average day in Hoagie's Alley (which, for the purposes of this story, has apparently been relocated closer to Beverly Hills) for Top Cat and his gang, who are today posing as Boy Scouts, out doing good deeds in the hopes of getting rewards.

A few days later at a gypsy store, Benny receives news from Mrs. Vandergelt's lawyer, Sid Buckman, that she has died and put his name in her will.

and the rest of the gang accompany Benny to the Vandergelt mansion, where Dibble is now working as a security guard.

Kitty is eager to have a rich cat for a husband (to the point that she puts on a wedding dress for the date), but this plan is foiled when she mistakes Brain for T.C.

That night, Snerdly throws a costume party, making Benny wear a bulldog mask and then calling up the local dogcatcher and his pet doberman Dobey to say that there's a mutt roaming around the Vandergelt estate.

As it turns out, the missing Amy has been working at a car wash as part of Snerdly's evil plot.

They arrive too late, as it is now midnight and Snerdly has just inherited the Vandergelt fortune, but Sid Buckman is then revealed to be Gertrude Vandergelt, alive and in disguise, which means that she, in fact, faked her death as part of a scheme to unmask Snerdly's crookedness.

[4] On February 20, 2024, the film was released on Blu-ray as part of a Hanna-Barbera Superstars 10 boxset through Warner Archive.