Yuhan, an older mother, enrolls her daughter in the prestigious “Wonderful Kindergarten,” hoping to give her the best start in life. But just months later, Qiaoqiao falls down the stairs in a so-called accident and ends up in a coma. Searching for answers, Yuhan connects online with Xin’ai—a young mother who lost her son five years ago—and discovers that everything leads back to Principal Mandy. Determined to uncover the truth, Yuhan poses as an entrepreneur, setting up the “Good Behavior Nutrients” scheme, while Xin’ai goes undercover as a kitchen worker at the kindergarten. Together, this unlikely duo navigates the corrupt kindergarten system, outwitting those in power to expose the truth and seek justice for the children who cannot speak for themselves.