Thoren's computer shows that none of the children of Sugartown are due for presents this year. Santa Claus and the elves are surprised by this computer malfunction. They decide to go and investigate. They discover that two mischievous kids have hacked into the 'Santanet'!
Kinshi asks Santa Claus for a magic growing potion, as she's too small to play in her school basketball team. The elves are moved by her story. They ignore Santa's instructions and give her the magic potion. But they get the dosage wrong. Kinshi turns into a giant, wreaking havoc all around...
David is jealous of his little sister, who's getting all his parents' attention. He asks Santa Claus for a potion to make him little again. Santa won't hear of the idea. But behind his back, Dudley steals the magic size-changing machine and takes it to David. But they get the doses wrong, and David becomes tiny. Santa has to change size himself to rescue him...