Driven out of the family, single mother Xu Mengyao sets up a grilled sausage stall at the night market with her daughter Xiaoxiao. Having worked as an auction house appraiser for eight years, she sees right through the true value of things and the calculations of human hearts. Daughter Xiaoxiao was born with rare synesthesia, where emotions have colors in her eyes; moreover, due to her child's unfiltered words, she always hits the nail on the head regarding the motives adults desperately try to conceal. Until one day, the city's largest real estate developer's bottom card is exposed by a single sentence from Xiaoxiao at the negotiation table, and her stepmother's three-year conspiracy comes to light. Xu Mengyao will use the law and her skills to reclaim justice for her daughter.