Koume Hino has been though some things raising her two younger sisters. Just when she thinks she’s caught the bouquet at the older of the two’s wedding, she’s sucked into another world, bouquet and all! When she wakes up, there a naked young man… a very young man, is he a newborn!? And to make matters worse, the two of them are all alone in a mysterious basin landscape overflowing with greenery and wildlife. With nothing else to do, Koume starts taking care of the baby, but the child, whom she nicknames The Prince on a whim, turns out to be an actual prince, protected by a certain group of men— A soothing, calm isekai fantasy that tells the tale of interactions between Koume, the baby, and his knights.