The waste wood boy Xu cool today, the yin and yang wrongly came to the mysterious planet Sanjie star. Since then, he has changed his entire life. After meeting four female knights with different personalities and specialties - cat knights, fish knight oranges, bear knights Xiao Bao, and Winged Knights, they joined their battle teams and experienced a series of life-and-death battles, dangerous traps, and rebellions of their companions... At the end of the story, everyone's end is different, where to go, only to fate.