The Plant People is a Mightor episode of Moby Dick and Mighty Mightor. It first aired 2 December 1967 on CBS.
Summary[]
Li'l Rok, Sheera, and Tina are trying to catch butterflies, and they chase one into a nearby cave. When they come out the other side, they discover a strange world of man-eating plants. Luckily, Tor was following them in case they needed help, however, he loses his club and is captured with the others.