Well, the chick grew up into a chicken, but you’re still not sure how the egg got into that cave...

Space Chickens are a group of chickens who believe they were transported from outer space to the dragon cave with the sole purpose of taking over planet Earth. Unfortunately, a considerable amount of soldiers fall victim to the meat-eating inferior native inhabitants. As a counter measure, a new unit of this large army of strange hens was created: the SCLF, or Space Chicken Liberation Front.

Pocket Cucco is a member of this squad, and charged with locating as many of their captured soldiers as possible. She's also a miniature chicken; so small in fact, that she can sneak into a humans pocket without being noticed. From time to time she will peek over the edge, scanning her surroundings for captured chickens. When she has managed to find the exact location of a captive soldier and has gathered all the information about its prison, she quickly retrieves the other members of the SCLF from the nearest headquarters to launch the rescue.