In the gym, Four is standing on top of a stack of Eight's Buddy Blocks, with his own stacked in front, followed by Two's and One's. Eight is facing the block stacks. Four is nervous, so he jumps down to his own Buddy Blocks which he feels safer on. Eight points out that he's only half as high as he was, then Four goes down the stacks, preferring the lower ones as he feels safer on them. Eight starts to ascend them and, unlike Four (who's telling Eight to be careful), he finds the shorter stacks boring and wants excitement. He climbs up and down the stacks, and then the alarm sounds.
Agent 37 tells the Numberjacks that a wheel on a woman's bike and two wheels on a boy's toy car have disappeared. Then, a third wheel on the toy car also disappears. Six chooses Four to be launched, so Four lands on a memorial.
Then, a woman's earring disappears, as do three of her four rings (first two, then the third). A boy then prepares to have four fish fingers, only for all but one of them to disappear (again, first two, then the third). Five asks if there's a pattern and the agent replies that if there are four things, two get taken away, but if there are two things, then one gets taken away.
Four then hears a sucking noise which Three thinks sounds familiar, and then Four catches a glimpse of a white top hat. Sure enough, it's the Numbertaker. The Numbertaker walks towards the school, so Four pursues him.
At the school, Five asks Four if there are any things in sets of fours and twos. Four counts eight papers, which they think should be fine, only for the Numbertaker to start taking them. Like the other things, he takes them bit by bit, until there is only one left. This reminds Four of his time in the gym earlier, jumping on the Buddy Blocks. Six concludes that the Numbertaker is making the amount half as big each time.
Five imagines the Numbertaker taking away a bird's wing, then half the Dancing Cow's legs and half of that (leaving her with one leg), then half a spider's legs, half of that, and half of that again, and half again (again, leaving only one leg).
Three starts up the brain gain machine and they try to make brain gain to turn one into two into four into eight, but Three has trouble remembering that pattern and ends up saying things like "one becomes four" and "eight becomes two", eventually concluding, "I don't remember". So when Four receives the brain gain and tries to use it on the fish fingers, but the amount keeps changing.
Six wants to find a quicker way of phrasing what they want, then an agent reveals that making numbers twice as big is called doubling. Three corrects the brain gain to be able to double the number of things, and this time it works.
However, the Numbertaker then comes along and uses his vacuum to turn Four into a two. Four/Two runs away, and the Numbertaker chases him. Then, the Numbertaker turns Four/Two into a one. Three tries to fix him with brain gain, but she says, "Double, double, double!", which turns him into an eight.
Four/Eight is forced to make the Numbertaker halve him again, then Three uses brain gain to make a doppelganger of the Numbertaker, and the two Numbertakers erase each other.
Four returns, they do the recap, then he and Three go into the gym, where Three is jumping on her own and Six's Buddy Blocks. She's a bit disappointed because she doesn't know what half of her is but wonders if that makes her unique. Four is dubious about this and asks the viewers if there are other Numberjacks without halves.
This episode provides examples of
- Ambiguously Related: The two boys with the toy car are both blond and are in the same yard, hinting that they could be brothers.
- An Arm and a Leg: Five imagines the Numbertaker gradually taking away the legs of the Dancing Cow and a spider, leaving both with one leg.
- Artistic License – Biology: The spider Five imagines has two eyes instead of eight.
- Bad People Abuse Animals: Five imagines the Numbertaker taking away animals' limbs.
- Brainy Baby: When Four is turned into a one (which should be a one-year-old in Numberjacks terms), he's still aware of what's going on and speaks properly.
- Continuity Nod: The numberjacks defeat the Numbertaker by sending brain gain to double him. In "Into the Teens", Three accidentally created ten more Numbertakers, who despised each other, and made each other disappear.
- Expendable Clone: Three doubles the Numbertaker and no one bats an eye when the clone disappears. The real Numbertaker also disappears, but he comes back, while the clone doesn't.
- Foreshadowing: The sucking noise can be heard before the reveal that it's the Numbertaker's tools.
- Fountain of Youth: Implied. Four is turned into a two, then a one, and seeing as the Numberjacks' numbers correspond with their ages and Four called himself a teenager when he turned into Fourteen back in "Into the Teens", this would imply he turned into a two-year-old, then a one-year-old.
- Hurricane of Euphemisms: When Four is bringing the papers back, he says, "Double! Two times as many! Twice as many!".
- Tempting Fate:
- Four and Five say that eight things should be fine, only for the Numbertaker to take them.
- Three and Four comment on things being back to normal, right before Four is turned into a two.
- Vocal Dissonance: Four's voice is already deep for a four-year-old, but when he turns into a two, he still has that deep voice, making it even more dissonant. It's taken even further when he gets turned into a one and still has that deep voice.
- Would Hit a Girl: In Five's imagination at least, the Numbertaker amputates both the Dancing Cow and a female spider.
