The show was about the alien Kosmos who came from the planet Milimetrus. He was dressed in a green suit and had a pot on his head. Kattis taught him all sorts of things about how things work on Earth. The series had a spin-off called Doctor Kosmos, where Kosmos was a veterinarian who rode around on a green moped helping animals. It was aired as film segments in Kosmos & Kattis.
