Watch full movie online. “The Monster in the Mirror Musical” is a comical but touching 90-minute original pop musical film that aims to empower the youths of today by addressing important and relevant issues like self-love and identity-building. An insecure teenage girl uses a magic mirror that extracts all her insecurities into a monster girl in order to win a boy’s affections, only to learn the true value of self-love and compassion.