This study is a Phase II study to evaluate the clinical efficacy and safety of two cycles of induction Toripalimab plus chemotherapy followed by definitive chemoradiotherapy and consolidation Toripalimab therapy for large-volume, unresectable, locally advanced stage II-III non-small cell lung cancer ("large volume" is defined as primary tumor ≥5 cm in greatest dimension or metastatic lymph nodes ≥2 cm in shortest diameter).
