Lok Chen, a primary school student, was sent by her father to a school that champion perfection. Anything that is less is intolerable. With a grading scheme of either a full 100 or 0, those who fail to perform to perfection will be modified for improvements. Soon, Lok Chen discovers that the system itself is flawed with dystopic intent. Whether she will survive the system now becomes the question.

Wolf, born into a deaf family, embraces sign language with confidence despite obstacles in life; Sophie, having received a cochlear implant at a young age, continuously strives to be seen as "normal" despite having a "deaf accent." Alan, with a cochlear implant like Sophie, is capable of both spoken language and sign language; he advocates for diverse modes of communication within the deaf community. Bound by love and friendship, the three embark on a self-discovering journey that is not without its moments of pain.

Ten-year-old Kwong is a Primary 5 student who has to contend with "Internal assessment for Secondary Places" and parents who constantly argue. He is at a loss. His grandma, who lives alone, is always patient and happy to learn about his world. Grandma passes away suddenly, Kwong suffers from insomnia. At night, when he looks at the boundless sky, he feels secure, as if many friends are talking to him. He keeps all this to himself. To his parents, Kwong is just a naughty boy. They have no inkling that Kwong may be experiencing emotional problems.