Scooby and Shaggy get into a fight and give each other the silent treatment. Things take a serious turn when a burger-like creature comes to haunt them.

Velma wins first prize at her elementary school science fair with a computerized robot that Velma has programmed to do exactly what it's told. When mysterious locker robberies occur, Velma is the prime suspect. Things get even worse when her robot goes on a deadly rampage.

The gang accidentally gives Scooby the cold shoulder. Feeling they no longer need him, Scooby runs away. Realizing how cruel they were, the gang goes on a city-wide search for Scooby.