Born as the third daughter of a poor farming family, the reincarnated girl, Noa, has always been at the depths of misfortune. Sold off by her parents, she spent her days being worked mercilessly like a slave by her employer. However, a turning point arrives when a monster attacks the town.

She then encounters with Kureha <Hero's Egg>, and Iris <Saint's Egg>. And then, the title of <Sage's Egg> manifests for Noa as well...This is the story of girls from the bottom rungs of society as they forge their own other-world slow life with magic and wisdom!