两个可爱又顽皮的天主教中学生Francis和Tim,不愿服从成人世界的游戏规则,并深信正邪两立,非黑即白。他们作了本漫画,笔下处处影射他们的头号敌人雅森达修女。漫画世界与现实经历一起双线发展,带出年轻人的成长之路。现实中连串的痛苦经历,令他们渐渐成长,原来生活可不是这么容易。In mid-1970s Savannah, two bright but rebellious boys, Francis Doyle and Tim Sullivan, fight boredom, hormones and harsh teachers as they struggle to find something meaningful beyond the walls of their parish school. Francis, an exceptional artist whose imaginative forays into a fictional universe of good and evil fill his notebooks with comic-book imagery, creates a netherworld of superhero alter egos for the two boys. When the ultra-strict Sister Assumpta seizes their artwork one day, the boys embark upon an obsessed trail of revenge that ultimately changes their lives.