Elementary school student Shouya Ishida is creeped out when Shouko Nishimiya, a meek girl born with impaired hearing, transfers into his class. Following her arrival, Shouya and his friends begin to torment Shouko, making her the hapless target of ridicule and assault. The constant bullying turns school into a living hell for Shouko, where even the teachers remain indifferent to the situation. Koe no Katachi tells the heartbreaking story of Shouko falling victim to bullying, but also one of hope, remorse, and redemption.