Austin & Ally: Season 3, Episode 5

3 - 5: Mix-Ups & Mistletoes

Grundy tries to surprise the ANTs by dressing up as Santa Claus, but things take a surprising turn when the backup computer locks the kids in the school after its analytics deem Santa to be bad. It's up to the ANTs to work together and convince the computer of the true meaning of the holidays so that it will unlock the building and they can return home for the holidays.