He Huanhuan returns from the countryside to her wealthy biological family and is labeled as "casual." The family already has a fake heiress who has taken her identity, outwardly gentle but harboring hidden schemes. He Huanhuan couldn't be bothered with petty scheming, dealing with trivial matters with direct sincerity as friction between the two continuously arises. Amidst casual daily life, she holds firm to her simple and genuine nature, calmly resolving family conflicts and living out her own wonderful self.