Motherboard mistakenly sends a treasure map to Hacker. The treasure is the secret to the legendary cyber-pirate Ivanka the Invincible's invincibility. If Hacker finds it, cyberspace is doomed! To help Motherboard, the kids must find the secret treasure before Hacker does, and use their skill with angles to read the strange map that contains only riddles about twists and turns. The Big Idea: To turn something so it points in just the right direction, use an angle to measure the size of the turn.