The CyberSquad is having trouble keeping track of Buzz and Delete's moves, so Inez suggests they determine the floor that Buzz and Delete are on and go directly there instead of following each individual move. She draws a number line to make it easier to find out where the two villains are. The villains' most recent moves confuse the group, as they end up below the ground floor. Matt, Inez, and Jackie realize that they need to travel to negative floor numbers and define negative numbers for the confused Digit.
The CyberSquad finds that no one is on floor -3, and Motherboard cannot track their location. Jackie guesses that they are on floor -5, the Grand Ballroom, so Digit tries to determine which direction to go. Initially, he thinks that they should go up, but that turns out to be incorrect. Jackie, Inez, and Matt explain to Digit why -5 is less than -3.
Since Hacker has a secret device that can listen in on their conversations, Matt, Inez, Jackie, and Digit need to create a way to communicate with each other without Hacker knowing what they are saying. They decide to create a code and an accompanying ruleset so that both the sender and receiver can understand the message. Inez suggests using the page number, line number, and word number within the line of Digit's book, The Cyberchef, to communicate.
Bad Man challenges Amber to place on the number line three numbers between 1 and 2. He refers to the numbers directly to the right of the decimal point as tenths. He then gives Michael a similar challenge to that of Amber except with numbers containing decimals in the hundredths place.