卡斯普是一位受人爱戴的高中历史老师，由于基因缺陷，他的视力正在逐渐恶化，面临着永久失明的可能。最初他伤心不已，为了保住自己的工作，也为了帮助他的学生们顺利通过期末考试，他对校长隐瞒了他的健康状况。 Carte Blanche is a story about respected high school teacher who hides his progressing blindness from everyone around him - his friends, family, students and superiors. The medical diagnosis leaves little hope. Due to a genetic disorder Kacper is faced with a very real possibility of permanent blindness. Initially heartbroken, he decides to hide his health problems to fulfill his educational duty and help students with end of school exams.