Moby Dick and the Mighty Mightor

The Plant People [Mighty Mightor] (1x40)

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Li'l Rok, Sheera, and Tina are trying to catch butterflies and 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.