Zetsubou-sensei and the students go on several unusual class trips, including an archaeological expedition, the Museum of Unnatural History, and Daisan Sentaku City - the city of the inexplicable third alternative. You know, like, when you're trying to decide whether to get a puppy or a kitten... and you end up with a crocodile? The students also practice selling themselves (legally), getting over their self-entitlement, and the art of "soft landings" - a.k.a. breaking bad news gently.
Story and art by Koji Kumeta.