Pursued by Hacker, Digit lands on the cybersite Eureeka, where his mission is to find Professor Archimedes. But Archimedes is nowhere to be found, and only a pile of 2-dimensional rods are where his chip factory should be. The kids arrive to help and discover that by linking the 2-dimensional rods together into certain geometrical patterns, they create a surprising 3-dimensional shape. This helps them unravel the mystery of Archimedes' strange disappearance. Part of the "Cyberchase" series.