During a monster attack on the city, which is something that happens quite often, Silk and her two friends try get close to the attacking monster for a better view. An unfortunate choice of location to watch from leads to UFO-man, the city’s giant protector, to land on the girls crushing them to death. Feeling sorry, UFO-man blames their death on the monster and promises to bring Silk and her friends back to life by lending them his power but the catch is that they now have to become the city’s protector as well.

In the future, most of mankind lives in artificial space colonies, climate-controlled and completely safe. The orphan girl Luna, selected to receive a scholarship at the prestigious Soria Academy, finds herself in quite different circumstances. An excursion gone terribly awry leads to Luna and her classmates being stranded on an uninhabited planet. Without any experience of untamed nature, the motley crew is faced with a challenging struggle to stay alive until rescue comes. If it comes...