A professor's lunch break becomes a one-way ticket into the swamp when his watch stops and his body starts changing into whatever animal lives around him next. The genius isn't the transformation itself, it's that he's genuinely trapped, genuinely terrified, and genuinely learning what it means to survive as each new creature. A 1982 special that treats a children's book with the weight of actual horror, where the fantasy of becoming nature crashes hard into the reality of being hunted by it.

Professor Poppen, an assistant biology professor at Udo University, is eating lunch by a swamp on the campus grounds when his wristwatch suddenly stops. He then begins turning into various animals that live in the swamp, setting off a strange adventure that puts his life at risk and leaves open whether he can ever return to normal. The single-episode fantasy adventure special adapts Yoshihiko Funazaki's Poppen-sensei children's books, in which the professor becomes caught up in his own imaginings about nature.