The CyberSquad tests if its contraption serves as a raft. While it floats, it contains holes, and Digit gets attacked by piranhas through the holes. The group determines it needs to build a raft with no holes and no overlap. Together, they combine square pieces that they find on the floor to make a big raft. Inez explains that they've created a tessellation, and she defines the meaning of the word.

After creating five solid squares on the ground, the CyberSquad uses a vehicle to lift the squares off the ground and create a cube. The cube transforms into the Archimedes Terminal.

Numbers 10 and 6 discover the joys of being 16. As the number 16, they impress number 4 as they show all the ways they can be a square.

The Earthlings consult with Chief about whether or not Sleight O' Hand stole Hacker's recharger key. Chief claims that Sleight looks like a triangle and thus committed the crime, but Inez suggests that there could be other suspects. She states that they should look at the evidence from every point of view because shapes look different at different angles. They revisit the video footage to determine if Sleight O' Hand is still a suspect.

Numberblocks 16,17, 18, 19, and 20 try to break into a museum by unlocking the doors. To do so, they use their number sheets to figure out the best combinations to open the doors.