Mr. Rhule, the principal, gets a new computer, and Ms. Frizzle's class has the job of opening the school and set up his computer. Carlos's brother, Mikey (from Getting Energized), is a computer expert. After he sets the computer up to raise the flag, make the coffee in the teachers's lounge, and ring the bell, he goes on his own trip to see the inner workings of the computer. Carlos records his voice with a handheld microphone. As usual, something goes wrong, along with the replay of his recorded voice, and Mikey has set the computer to do the tasks every minute instead of everyday. Can the class get to Mikey to have him fix the problem?