Ganso Hoppe-chan turns up in Sun Kingdom, a world built out of cuteness, with no memory of who she is. The kingdom is under threat: toxic Hoppe-chan creatures are spreading an uncute place through it, and Ganso joins the Guardians to protect her new home. Meanwhile, in the real world, an office worker named Hoho is steadily losing her self-esteem at work and in life, and she is close to losing her way entirely. Somewhere between the two worlds, Ganso and Hoho cross paths. The result is a twelve-episode fantasy adventure that moves between a whimsical kingdom and an ordinary working life.