Ensemble cast of off-the-wall Warner Brothers characters, appearing in a wide variety of roles. Wakko, Yakko, and Dot Warner, are WB Studio creations who were just too "zany" to be of any use to the studio. Pinky and the Brain are two mice bent on world domination. Rita and Runt are a cat and dog team, who get into perilous situations every episode, put always seem to find time...
The Brain designs a mesmerizing doll, Noodle Noggin, and plans to have Santa Claus deliver one to every house so he can make people do his every command through mind control.