Dexter and Mandark drill underground to expand their labs, but end up overlapping each other's work. They secretly devise a plan to destroy each other.

Dad wants cable really bad, so Dexter illegally pirates cable for him.

Dexter accidentally shrinks his parents, and puts them into a model of there house. Although the house isnt completed, so Dexter must find a way to reverse it before they know the truth.

Dexter decides its better if him and Mandark work together, although in the end Dexter does all the work while Mandark does nothing

This takes place in the future, where Old Man Dexter tells about his ""glory days"". And Old lady Dee Dee keeps on adding her opinions as well...

Dexters parents accidentally sell Dexter's latest invention, and it is bought by Mandark.