Introduction: In a world of daughters in a different time and space, there are beautiful girls who live a peaceful life and have four loyal guardians. In this world, there is a kingdom of daughters and a kingdom of men. The kingdom of daughters reproduces its people with holy springs, and the kingdom of Geyang continues its descendants with the spirit sword. Due to the mysterious power, the power of the spirit sword of the kingdom of Geyang is gradually exhausted, and the kingdom of Geyang keeps attacking Invade the daughter country in order to gain the power of the holy spring. To this end, the ancestors of the daughter country used the power of the holy spring to build a barrier for the daughter country to resist the invasion of the Geyang country.