Hacker’s plan to clone himself goes haywire. The Clonitron clones Delete instead of Hacker. But Hacker takes advantage of the mishap by sending the Delete clones to take over the R-Fair City cybersite. To complicate matters, every time Delete sneezes, his clones multiply even more. As the problem escalates, the kids do the math to keep track of the number of clones as they increase. Part of the "Cyberchase" series.