Has histologically/cytologically confirmed diagnosis of previously untreated and pathologically confirmed resectable clinical Stage II, IIIA, or IIIB (N2) non-small cell lung cancer (NSCLC) \[American Joint Committee on Cancer (AJCC) 8th Edition\]
Has an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 within 7 days before the first dose of study intervention
Participants who have not achieved a pathological complete response (pCR) following completion of neoadjuvant chemotherapy and pembrolizumab followed by surgery will be eligible
Confirmation that epidermal growth factor receptor (EGFR)-directed therapy is not indicated as primary therapy (documentation of absence of tumor-activating EGFR mutations \[eg, DEL19 or L858R\])
Human immunodeficiency virus (HIV)-infected participants must have well controlled HIV on anti-retroviral therapy (ART)
You may not be if
Diagnosis of small cell lung cancer (SCLC) or, for mixed tumors, presence of small cell elements, or has a neuroendocrine tumor with large-cell components, or a sarcomatoid carcinoma, or a pancoast tumor
Documentation by local test report indicating presence of anaplastic lymphoma kinase (ALK) gene rearrangements
Received prior neoadjuvant therapy for their current NSCLC diagnosis
Received prior therapy with an anti-programmed cell death 1 (PD-1), anti-programmed cell death ligand 1 (PD-L1), or anti-programmed cell-death ligand 2 (PD-L2) agent, or with an agent directed to another stimulatory or coinhibitory T-cell receptor (eg, cytotoxic T-lymphocyte-associated protein \[CTLA-4\], OX-40, CD137)
Received prior systemic anticancer therapy including investigational agents other than what is specified in this protocol
Received prior treatment with a cancer vaccine
Received prior radiotherapy within 2 weeks of start of study intervention, or has radiation-related toxicities, requiring corticosteroids
Received a live or live-attenuated vaccine within 30 days before the first dose of study intervention
Clareo Health | A Study of Pembrolizumab (MK-3475) With or Without Intismeran Autogene (V940) in Participants With Non-small Cell Lung Cancer (V940-009/INTerpath-009)