脱サラして農業を営む佐伯莞爾（32歳）は、一人気ままに田舎暮らしを送っていた。ある夏の夜、晩酌しようとビールを手に取ろうとしたその時、玄関の戸を激しく叩く音が…。戸を開けてみると、こんな山奥にいるはずのない甲冑を身に纏った「女騎士」が立っていたのだった。果たして彼女は一体何者なのか――！? 脱サラ独身農家×異世界からやってきた女騎士が繰り広げる、新感覚スローライフ！ Saeki Kanji, 32 years old and still single, is living in the Japanese countryside, which is in decline. After graduating from university with a degree in economics he took a job as a salary man in a leading company in Tokyo, but retired when he inherited the family farm in Miyama village when his parents passed on. He soon took to the life of a simple farmer. One day a beautiful woman wearing full body armor came to his door begging to stay the night. She claimed to be royalty from another world and is unable to return there. She ends up living with Kanji and helping out the local agriculture situation.