The Wedding Guest features a man named Jay. Traveling from Britain to Pakistan, he plans to attend a wedding. He has secrets however. Bringing duct tape and a shotgun with him, he plans to take hold of the bride-to-be and kidnap her. Although he has a precise plan, things start to fall apart rather quickly. As a result, Jay is pushed to get across the border with his hostage. His journey takes him through back alleys and railway stations. He also takes a trip through New Delhi's black markets. During the scary adventure, secrets come out as new attractions and loyalties come to pass.