Numberjacks Three and Four play hide and seek, but Three doesn't know how to count above 10.
Problems occur at the seaside town! One sandcastle has turned into 11 sandcastles. Four is going out.
Four sees the Numbertaker making things 10 more! The Numbertaker sees a girl with 3 candy flosses. He writes a 13 on the wall and there are now 13 candy flosses! Next he turns one sunshade into 11 sunshades!
Three starts the Brain Gain Machine. Four sorts everything back to normal. But Three accidentally adds a number 1 next to Four, making him 14!
Three rubs out the 1 next to Four, but the funny Brain Gain has also turned 1 Numbertaker into 11 Numbertakers! They don't like each other. They disappear one by one and Four returns to the sofa.
Meanwhile, Three gets One to stay next to her to become number 13. She shows this to Numberjacks Seven, Eight, and Nine. Then Nine asks the viewers that if One were next to Seven or Eight or Nine, what number would they make?
NUMBERJACKS: 1, 3, 4, 5, 6, 7, 8, 9
AGENTS: 33, 55, 70, 85
MEANIES: The Numbertaker
.The answer to Nine's question at the end is numbers 17, 18, and 19.
This is the only time a Numberjack becomes a teen number.
Zero and Two are absent in this episode.