かつて、人と魔が存在していた時代── 魔王は人間の姫をさらい、自らの城に幽閉した。 人々は怒り、勇者は姫を救うために旅立つ！！ そんな中、檻の中で姫は想う… 「寝る以外、する事ない」安眠する方法を探すため、囚われの姫が魔物を狩ったり、宝物庫に忍び込んだり・・・！ 新感覚、睡眠ファンタジーコメディー！！
Sshhh! Princess Syalis is trying to get a good night’s sleep. Some shut-eye. Forty winks. Catch some Z’s. Long ago in olden times when people and demons lived together in—well, disharmony, really—a demon king kidnaps a human princess and imprisons her in his castle. Bereft, the princess’s subjects beat their chests in anguish…until a hero arises to spearhead Project Rescue Our Princess! While waiting for her knight in shining armor, what’s an imprisoned princess to do…? Teddy-bear guards with bat wings are all very well, but her dungeon cell is bo-o-o-ring! So, she decides to wile away the long hours by sleeping. Now if only she could get comfortable…and didn’t suffer from insomnia…
