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.

Cucco 003 and some of her namesakes are part of this squad, charged with finding as many of their captured soldiers as possible and rescuing them before they are eaten. Once they have located their fellow soldier, general procedure is that one hen will act very funny, distracting possible guards, while the other hens use all their expert technical knowledge to free the captive Space Chicken. This is extremely dangerous work, and thus only the most hardened, most intelligent chickens are allowed to join the SCLF, and then only after years of extensive training.