The premise is, on Earth 2, people were working on a way to manifest immortality. The result was a virus that would age you extremely slowly (one month every hundred years) until puberty hit, whereupon you turned into a shrill, buboes-covered zombie thing and then died. Result? A planet full of children. Three hundred years
All of this is to say that watching that ninety seconds of footage was like a mirror into my own (not necessarily current) life, though with better English: dealing with a room full of hyperactive defiant children, struggling to communicate key ideas and concepts to these monstrous little hellspawn, dying of a deadly plague...all part of the hagwon job. Alas I can't find it isolated, and don't feel like downloading and learning how to use a video editing program just for that, so content yourself with the few seconds in the original broadcast preview for this episode.
The next time I'm frustrated in a class, I'll just think to myself: what would Captain Kirk do?
Unfortunately the show doesn't really give us an answer. Instead, through the magic of editing, Kirk and the children show up to save the day, sans all that messy "classroom management" business.