Gao Yue, a beauty influencer, is caught in a devastating flood while traveling and swept away by a whirlpool into a beast world with two suns. She falls into the Sacred Lake, a forbidden territory of the Serpent Tribe, where she is rescued by Mo Ya, the young lord of the fifth-rank Black Serpent clan. In this world, beastmen can transform into giant serpents and various animals. Physically weak and terrified of snakes, Gao Yue pretends to be a cub to protect herself. Mo Ya develops a special fondness for the fragile and gentle girl, taking devoted care of her. Determined to become self-reliant, Gao Yue uses her makeup skills to earn beast crystals while trying to lose weight and find the whirlpool that could take her home. However, her beauty and talents attract the attention of males from various tribes, drawing her into tribal conflicts. As they face these challenges together, Gao Yue and Mo Ya gradually fall in love and promise to spend their lives together.