After his mother's death, Collin Fenwick goes to live with his father's cousins, the wealt

北平中学生袁文光喜欢京剧，常因看戏而不得不翻墙回校，终被校方开除。文光到一剧班学艺，又因反抗班里的封建行规被赶走。老伶工黄月楼将其收留，文光从此改名袁少楼。因为人好打不平，人送少楼外号“二百五”。