Every summer, Ou Luoxi returns to Sunset Town to visit her only relative who lives here - Ou Luoxi's grandmother. Grandma would tell Ou Luoxi the ancient legends about Sunset Town since she was a child. A mysterious family, the Nangong family, was mentioned. Ou Luoxi has believed that this is not just a legend since she was a child. By chance, I brought my boyfriend Han Weinuo home, but unexpectedly, it led to horrific harassment from other mysterious families dormant near Sunset Town, which then triggered a peerless battle between the Nangong family and other families. What caused the family that had been hiding in Sunset Town for thousands of years to embark on a journey of war at this moment? What is the reason why Ou Luoxi and Han Weinuo, who were originally in love, experienced ups and downs in their relationship amidst crises? What is the reason that makes the originally peaceful town full of strange colors. The secret that has been hidden for thousands of years is about to be revealed in a battle...