"Monica Anderson thinks her biggest problem is taking her karate-chopping younger brother, Peter, trick-or-treating on Halloween. But she is wrong. After knocking on the door of an old, creepy house the kids are met by a strange woman pleading for their help. The evil Dr. Screem is after five horribly ugly ancient masks. These artifacts have the power to manipulate the world around them. Monica and Peter don't want to help, but they must retrieve...

When Mickey and Amanda lapse in their cat-sitting duties and Bella the cat is hit by a truck, they replace the cat with a look-alike that causes more trouble than they expected.

When Matt's parents send him to a strange boarding school, where the students move at a dead-slow pace, he begins to suspect he has been enrolled in a school for zombies.