While playing a Mahjong game, Rachel and Eleanor discuss recent events. In the conversation, Rachel points out that despite being a poor American, raised by a single mother, she is still enough.

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.

Rachel joins Nick's mother to tell her that she turned down his marriage proposal because she knows his mom does not approve due to her immigrant background.

The CyberSquad needs to get across a pool of lava. They find tiles in the shapes of triangles, pentagons, and hexagons, and tessellate the tiles in order to create a bridge that will shield them from the heat. When they run out of triangles in the middle of creating the bridge, they attempt to use pentagons, but that shape leaves gaps, so they use hexagons to complete the bridge.

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.