Dexter and Mandark are going to extend their laboratory sizes to make room for more of their inventions but when they do, they both overlap their laboratories into each others without noticing. Once they figure out, they get into a fight which is too evenly matched and the two of them are now forced to share.
They both start working on plans. Mandark's plans are to destroy Dexter's Lab and Dexter's Plans are to keep Mandark from destroying his lab. They both start critisizing each other's plans and then they both remodel each other's sides of the laboratory and completely change it into their own ways. Then, Dexter and Mandark destroy each other's labs and cause a huge hole in the ground destroying the neighborhood above causing chaos everywhere and they both argue over who won.
Although "Beau Tie", "Remember Me?" and this episode are the first aired on November 22, 2002, they were actually the second three episodes produced in the same year according to the credits. Although Cartoon Network aired these three episodes prior to these ones ("Sis-Tem Error", "Bad Cable Manners" and "Dexter's Library").
This first aired on Cartoon Network (along with its sister episodes "Beau Tie" & "Remember Me?") the same day Courage the Cowardly Dog ended: November 22, 2002.
