Gary and Wyatt in the quest to create the perfect woman use their computer during a raging lightning storm and create "Lisa," a computer genie who can grant their every wish.
Gary and Wyatt want to be on the basketball team and Lisa zaps the coach so that he does just that, but she doesn't give them any extra talent and the team suffers.
Gary asks Lisa to change the high school to make the courses more interesting. Lisa adds courses like "How to Eat a Pizza" and "The History of the Bikini," but Gary still finds himself failing.
Wyatt is afraid to take risks and Gary is afraid that he'll never have sex. Lisa zaps up watches that show how much longer Wyatt has to live and how much time is left until Gary has sex.
After Lisa becomes the instructor of her re-imagined sex education class, Gary gets a lab project to "do it" in front of the whole class with his sexy lab partner.
Lisa gets a computer virus where she looks like she has a cold. In her debilitated state she brings her favorite soap opera to life including a homicidal killer.
To have more time Lisa creates doubles of Gary and Wyatt to do the mundane tasks in life. Unfortunately they do everything better than the originals and they decide to take over their lives.
Unable to find a girl that likes video games and Mystery Science Theater 3000 (1988), Gary has Lisa whip up a robot girl to go out with him for one date. Wyatt and the girl fall in love, but who is going to tell Wyatt?
Unhappy with their parents, Gary and Wyatt switch, but all goes wrong when Gary's parents want to send Wyatt to military school and Gary's parents sell the computer (with Lisa in it).
To seek revenge on a bully that tortured Gary at summer camp, the boys go back to 1986 as camp counselors and save Gary, ruining the bully's life in the process.
Lisa creates Gary and Wyatt a supercomputer named Hank that anticipates their every need. After Hank falls for Lisa, he decides to eliminate the competition, Gary and Wyatt.